Also, I think her anger is transfering/externalisation - or it could be a way of rationalising her behaviour. If she demonises you anything goes so to speak re: treatment of you. To be fair, what is going on in her world is in some part irrelevant to your life right now. Hang in there, it [censored] badly but just keep reading Michelle's book & anything else that helps. What I did was start to be a little unpredictable, I'd go out & stay out late without explanation. I had that fear that it'd mean he'd return the favour but he was already having a PA so hell, what could I lose?! One other thing, you have to get out there & do stuff that pleases you, even if it's just a walk. You have to GAL but although actions speak louder than words it has to be authentic. They have to see you "through different eyes".
