Evening. I've been lurking around here a while and thought I'd make the effort and say hi to everyone. I've been reading the thread and . . . holy shit, some of it is ringing very loud bells.
I've known for some time (getting on 7 years now) that my mum was EA and suffering from a personality disorder. I worked through a lot of it in therapy, which was great. I'm still getting revelations though. Maybe it takes a lifetime to figure it out.
The stuff upthread about inappropriate boundaries around sex and personal issues is really, really familiar. I didn't realise it was common to so many peoples' experiences . . . My M told me that my stepfather was 'like a donkey, he needs no encouragement' (!) - at least that was when I was in my late teens, she also told me when I was much younger that my dad liked bondage stuff, and that he always wanted her to wear white lingerie. uuuuuuurgh.
I have to say that that's on the lighter side of some of her behaviour, which has included trying to kill herself and telling me it was my fault, telling me I was 'plain', reading my diary and mocking me about the contents then telling me I must have wanted her to read it because I'd left it where she could see it, and telling my brother that money was the main reason I married my lovely DH . . .
She has been much better of late, as she's found a partner and seems happy. I've been tentatively allowing her contact again, and even talking about personal matters to her. Thus far it is going relatively well, but I've got to say it's making me nervous. If it all kicks off again I know I have the strength to deal with it, but I really don't want to. To be frank, having her in the house gives me the heebie-jeebies and makes me feel very vulnerable. Last time I had nightmares for the two nights before she turned up 
It's really helpful to read everyone's experiences on here. It's crap that anyone has to go through that, but if you do, it helps to understand and have a peer group 