First thing first - she's "damaged" because, as she said(it's true btw) my father have cheated on her for many years, with few different women. He's the one to be blamed but not her. On another hand, she didn't want to divorce him(30+ years of marriage)and i think also the reason is that she doesn't have any degree, she cut contacts with her family(they are bad people, were mean to all of us), so by divorcing him she will be fucked. She doesn't have many friends, she doesn't go out or spend money on shit, but she don't have a job also(that is my father and her deal).

Ok, problem now is that she act like a victim and like a cunt most of the time(we found out about cheating last year), all those times she acted like a grown person, everything went fine, but she also became bitter, asshole, negative, and "i don't need to change, you need to change". That is making all of us in some position that is not mentally healthy to anyone of us(family of 4). I'm fighting with her more often, and yes, my father is usually on her side and he also became her dog(he's beta, reason for cheating is that my mother didn't want to have sex with him anymore). Except moving out(for now that is hard, i'm on university, EU and whole Europe is fucked). How to deal with her shit? To A&A, ignore her all the time?