Leander,
Great advice so far, I just wanted to add my 2 cents . I was the first in my previous marriage to leave, the ex was the first (disfellowshipped) but he went back full speed ahead he couldn't function without them. I left willingly. He cried, bawled and made my life terrible for about 1 year while we were going through the divorce. I would go out he would call my house 27 times and leave crying messages on the answering machine. He was bound and determined we weren't divorcing because of the rules of the cult. Well, guess what , once the divorce was final he dropped me like a hot potato, not only wasn't I the love of his life anymore I wasn't even his friend. He moved in with someone and was married within 3 months of us being divorced. What I'm trying to say is don't get emotionally drained trying to comfort her and ease her through this, if its your decision to leave, then your the one who has to make the decision, everyone else has to accept it, no choice in the matter. I hope I don't sound heartless but you can't help anyone accept anything they don't want to. Good luck to ya!