No matter how sad the thing is, she cannot be really helped that much. I mean, a decent psychoanalyst might deconstruct her to pieces and put back together (same goes for psychedelics but probably with bad results), but very few people go that way, and even fewer are actually helped. People like these are all around us, that's the really scary part for me. Some are quite obvious, some nto so much. Behaviour is same - playing victim, overreactions, their own twisted version of reality where they are right and everybody else isn't, some sort of attention whoring might be present too (some sad personal experiences here).

Have no doubt - I feel sorry for her. This shows how important is to have this happy careless childhood - investment that cashes back for the rest of our lives (I humbly think I am one of those, for which I am eternally thankful to my parents). Just as everybody else suggests - keep your distance from such people, or it might bite back.