Disclaimer: I do not own Supergirl

Author's Notes: I adore this concept and of course had to write my own version. And yes, I may make this a series, cause I've got babies on the brain... This month's SuperCat Slam theme was 'three' and I went the family route.

Heir to the House of El

"Alex, I can't just come out and say that."

"Yes, you can. Why are you making this harder than it has to be?"

"Because...because she's already gone through this part of her life! I can't...she probably doesn't want a repeat and...I'm happy the way things are."

"You're not happy, Kara. You're content. This would make you happy and she would be more than happy to support you. Kara...Cat loves you so much a random stranger could tell it aches down to her soul," Alex spoke assuredly, hands resting firmly on her sister's shoulders so she would stop pacing.

Kara's face was screwed up in worry, lips downturned while her hands wrung in between their bodies. "I...Alex, I dunno. I'm scared. I can't ask this of her," she admitted softly, the fire diminishing from her previous adamancy.

"Would you like me to ask for you like we're back in high school looking for a partner to dance with?" Alex asked, sarcasm dripping from her voice, a gentle jibe to loosen Kara's mood up.

She shook her head before sighing and resting it against Alex's shoulder. "What if she says no?"

"Then the two of you aren't meant to be."

Kara's head shot up to stare aghast at Alex.

"I'm serious. If she's going to shut you down without hearing your side of the story, your reasons—though frankly she should already know why—then you deserve to find someone who will support your wishes," Alex was careful how she worded her answer in order to not upset Kara but to urge her forward into action. She liked to keep hope that Cat would agree, but knowing how much it meant to her sister gave her the protective vibe she was currently acting upon. Though she understood why Cat might say no too. And if Kara was going to be disappointed and sad the rest of her life...she deserved better.

Kara was silent for several moments, nearly unblinking and worrying Alex until she nodded her understanding. "Alright. I'll ask her. Soon. Maybe not right now but when I get the courage," she said.

"Do it in the suit. Even with Cat, with your relationship change, you always exude more confidence as Supergirl," Alex suggested, placing a kiss to Kara's forehead. "Now, get going, I have paperwork to do," she said.

"Goodnight, Alex. Thanks," Kara said with a small smile, exiting the D.E.O. with a renewed sense of faith.

When Kara arrived home all of the lights in the penthouse were off except Carter's nightlight, a faint glow of blue and red emanating through his curtains, and the bedside lamp where Cat must have dozed off trying to stay awake for her arrival. Kara listened intently to the even beat of her family's hearts in the chill indicating it was getting cooler by the day, soon the leaves would be changing and dropping to smatter the ground with shades of yellow, orange and red. Honestly, it was Kara's favorite time of the year, the smells amazingly unique and the weather a gorgeous light chill despite the warmth the sun still provided. Granted, living in National City, things weren't quite the same as more Northern states, but fall was beautiful everywhere.

She sighed as she floated there a short distance from her and Cat's bedroom balcony. She had been so lucky in her life so far, barring the destruction of her home planet. She had a good childhood, hardly rife with any true hardships and though she lost twenty-five years in the Phantom Zone, years she would have spent making her parents proud by protecting Kal-El and if she were especially lucky meeting Cat at the right time, Kara was lucky in life. She was brought to the Danvers, a smart move on Kal-El's part though a selfish one, allowing her to grow up relatively normal per human standards. She was gifted such fantastic, caring foster parents, and the best sister she never could have imagined.

The friends in her life were going to be there forever, that much was certain and their supportive fun natures made up for the heartache she fought against every day. Kara proved herself capable and overqualified at Cat's assistant, proving her worth until Cat reluctantly let her go to grow and spread her wings as a reporter. But she had never been more lucky than when she and Cat finally admitted their feelings for one another and began a relationship, Carter often the focus because of how much he mattered to Cat and soon Kara. In her mind, he was Carter's son and she was so grateful and proud of him that it made her heart ache in happiness, prickling tears at her eyes every time he regaled her with stories of his day, showing off his work.

They were her family, just as the Danvers were but Kara had been feeling as though something was missing lately. She and Kal-El were the last Kryptonians and from all accounts it seemed as though he had no plans of starting a family, that urge to parent simply not as strong in him. Alex would slight him by saying the proof of that was when he abandoned Kara with Eliza and Jeremiah, but Kara liked to give him the benefit of the doubt. Becoming a parent was a big move and with their duty to the planet's safety—which, yes, they had chosen on their own to pursue and frankly didn't have to continue—it could have the potential of putting more family in danger. Going it alone was so engrained in Kal-El's mind at this point that Kara had noticed he sometimes still had issues letting Lois into his life, sharing that life with her, so she regrettably doubted he would become a father anytime soon.

Kara however...couldn't stop thinking about a baby Kryptonian lately. She remembered what it was like to hold Kal-El, helping Lara care for him, playing with him. She had always been good with children, both on Krypton and on Earth when she helped Alex babysit the kids in Midvale and she definitely got along well with Carter. But was it a far stretched unattainable idea? Would—

"Kara..."

Kara's eyes opened and she smiled wistfully noticing the half-lidded eyes of her lover, a yawn hardly suppressed as she shifted in their bed. Cat motioned with a lazy finger for Kara to join her, which she did, touching down lightly and sliding into the room, careful to latch the door behind her. She walked over to Cat, bending over the empty side of the bed to kiss her lightly before moving to quick change and slipping under the sheets to cuddle up to Cat, resting her head on the other woman's shoulder.

"You were longer than expected," Cat murmured, attempting to shake the exhaustion from her body to hold a halfway decent conversation.

"I got caught up at the D.E.O." Kara said, curling her arm around Cat's middle and tangling their legs together. It hadn't been an especially difficult mission, but Kara enjoyed the feel of Cat all around her at night and considering her conversation with Alex, she wanted to feel wrapped up right now.

"Hm...hard night?" Cat asked, turning her head to place a kiss to Kara's temple.

"No, just...talking with Alex," Kara said. She occupied herself with drawing little designs along Cat's side, thankful the woman wasn't ticklish there.

"Is everything alright?" Cat asked, a note of worry in her voice. She had noticed that something seemed off with Kara lately but hadn't been able to decipher just what. Perhaps now she would get her answer.

"Uhm..." Kara started, unwilling to outright lie to Cat but too fearful of the outcome. Cat adjusted her body so they were both laying on their sides, face to face.

Cat then placed her hand on Kara's cheek. "You know you can tell me anything, right? No matter what," she whispered meaningfully.

Kara bit her lip, brows curled up in anxiousness. "I know that. It's just...I don't think it's...an appropriate time," she tried to convey, almost turning her comment into a question with the up lilt at the end. Her hand stilled on Cat's side as she gripped the material of her shirt versus Cat herself.

"There's hardly ever an appropriate time for saying anything," Cat said, a chuckle bubbling out afterwards. "Remember when I first told you I loved you? We were in the office for crying out loud and the words came tumbling out over the simple gesture of bringing me lunch, knowing I had forgotten to eat breakfast. So whatever it is, you can tell me. Now, or later. I understand, but I don't want you to remain upset and nervous with me, Kara," Cat said softly, rubbing her thumb along Kara's cheekbone as she spoke.

Kara sighed into the gesture, eyes closed while she listened to Cat's soothing voice. She knew she could trust Cat and wanted things to work out between them, but was this really a deal breaker as Alex suggested it should be? When she opened her eyes again, pools of brilliant, compassionate green stared back at her, a light smile adorning Cat's face, which completely melted Kara on the spot.

"I want a child," she whispered, unsure for a moment if she had said it loudly enough for Cat to hear until the other woman's eyes widened exponentially and her hand stilled. Kara bit her lip, her own eyes widening as she watched Cat take in the idea.

Cat's breathing was deep and even but her heart rate had picked up slightly, mind racing a mile a minute. Understandable she was stunned. This was the very first time the topic of having a child had come up between them. She hadn't read Kara to be at the point in her life where she was ready to take on the trials of motherhood, to raise a baby. Cat hadn't given it much thought, despite the brief mentions of how good Kara was with Carter, seeing how well she interacting with children as Supergirl. She seemed to gravitate toward children whenever they visited the office, or they were out and about. Kara had such a soft heart. But did Cat really want another child?

Kara immediately began to backpedal, "Not that I'm not happy the way things are right now. I adore Carter more than anything in the world and you know how much I love the way things are between us and I wouldn't want to put that in jeopardy over something as silly and stupid as having a child of my own—our own—because I know you've already gone through that part of your life and it's not like I'm going to leave if you say no or anything but it's something I really want cause Kal-El may never have a child, too scared of not being able to protect them both, but I-we have so many people in our life that care for us, that will help us and help protect you, Carter and a potential child, and it's not because I think Kal-El won't have a child, but because I want one, but I already said that so I guess I'm just talking in circles at this point," she shook her head, hardly breathing as she had gone off on the tangent. "It's like an ache in my soul, knowing Kal-El and I are the last Kryptonians and I know it won't be easy but...I...I—you know what, it was stupid to ask, I shouldn't have-"

Kara was swiftly cut off by Cat's soft lips moving against her own, light and probing, pulling back then connecting once, twice, a third time before she felt Cat's tongue along her bottom lip and then contact ceased altogether. She stared wide eyed at Cat, brows furrowed in confusion.

"It's not stupid or silly wanting a child, Kara. I will admit that I am surprised but I'm more grateful that you told me," Cat was smiling serenely as she spoke, a warmth building in Kara's heart as hope began to bloom anew. "Nothing would make me happier than raising a child with you, Kara. I know how much family means to you, how much you want to be a mother. And watching you with Carter is perfect proof how amazing you'll be," she said, tears pricking at the edges of her eyes. Kara however, already had a few loose tears trailing down her cheeks.

"Really, Cat?"

"Really," she promised. Kara leaned in and kissed Cat fiercely.

"Thank you." Another kiss. "Thank you, Cat." Another kiss and Kara rested their foreheads together, her grip on Cat's back almost too tight in gratitude. Cat chuckled lightly.

"This is what you've been so worked up about, Kara?" she asked, managing to fight off the wounded tone in her voice.

Kara's head bowed in shame after she nodded. "I didn't think you would want to raise another child, that you were past young childrearing," she admitted.

"My most precious memories are of being Carter's mother. To have another chance at mothering a baby would be nothing less than wonderful. And this time I'll have you by my side," Cat informed her, noticing after she spoke how sappy she sounded. "However we have a lot still to talk about, alright?" Kara looked up, a smile tilting the corners of her mouth upwards even as she held her lip between her teeth and she nodded.

"I love you, Cat."

"I love you more."