This was really interesting to read, and I like the alternate dimension with happy sane Bellatrix who married the man she loves and has a normal life. And it's fitting that canon!Bella is jealous of her alternate self.

I especially liked the line where she asked her if she'd been living under a rock. XD

A few grammar things:

"even the likes of you would now." - "now" should be "know".

When a sentence is cut off suddenly, don't put a period after the dash.

Is this a oneshot or will you be continuing it? I would be interested in reading further if you plan on writing more chapters.