I lost count of how many times I rolled my eyes reading your post... If that was my cousin and she was that much of a loser, I'd DELETE her &(?#! I've deleted a bunch of losers like that from my FB and I would do it for screwed up family members too if there was any.
I'm sorry you have lowlife idiots in your life, we all have them, the best thing we can do is stay away from them <--- and I do that oh so well! Call me pathetic but I've deleted pregnant women from my FB before just cause I was simply SICK of hearing them talk about their pregnancy and how fed up they were. If they're my friends, I try to tell them "politely" to STFU (sometimes) but most of the time I shrug it off and try to ignore them because deep down I do love them and they can't understand how we feel.
PS. I'm always here for you