Writer's block is never fun. (:
Shane calls her Caity. He does this because he knows that it annoys her ("Shane, stop calling me that!), but he does it anyway. She would punch him but last time she did he stole her laptop and wouldn't give it back until she washed, straightened and styled his hair for him. She learnt her lesson after that.
Mitchie calls her Caitlyn. It annoys her sometimes because it sounds too formal for someone who wears neon orange fishnets but she lets Mitchie call her it because it's better than 'Bitch' which is what Tess calls her behind her back (and to her face too, but Caitlyn doesn't like to mention that).
Jason calls her Cuddles and if anyone else called her that she would punch them in the gut. She lets Jason call her this because she loves him like the brother she missed out on after her parent's stopped loving each other and started shouting instead. Plus Jason's hugs are a good comfort to someone like her.
Ella doesn't call her anything because it's hard to remember more than four people's names and Jason took up the fifth spot in her memory so now all she remembers is that Caitlyn's name has a 'y' in it.
Nate calls her C. She questioned it at first but after a while she got used to it. He explained to her once that Caitlyn was to formal, Caity made her sound like a child and he would rather die than call her Cuddles (Caitlyn said that it didn't matter because if he called her that she'd never talk to him again).
People know better than to call her C because it's only nice when Nate says it.