Interestingly, I don’t think she was originally given an origin that was all that in-depth. Bob Rozarkis wrote Karen as an individual caring enough to put on an act to make her boyfriend look like a competent hero in Teen Titans #49, but I think that was about it.
I have read that. Though it's been a while, and I don't recall all the details. Caring, but kinda all about Mal. Not sure that's a good look, if you know what I mean. On the other hand, if she's Ray's protege...well, it's kinda something in common, given his motive for becoming the Atom was to boost his girlfriend's success as a lawyer. Kinda hilarious, really. They could so bond.

I just wondered if we ever learned anything more on her background later.