My heart goes out to you too, Karma.
My first girlfriend has PTSD as well stemming from long-term domestic abuse.
Pardon me if I'm being impertinent, may I recommend MDMA therapy? I've heard great things about it, and Tim Ferris (of the 4 Hour Work Week fame) reportedly swears by its efficacy. It may be worth a try should everything else fail.
Hope you get better soon,
Alvin