Wow, first off let me say I am sorry that both of you have had to go through so much. I can see it from her point of view. She just had a terrible life changing event happen which makes her cautious of making another life changing decision,which may go horribly wrong in her mind. I also can see things from your point of view as well. You have waited so long to be with the person you love and now like a knife to the heart she is doubted everything that concerns you.
My advice is to back off for now. Pressuring her will only strain things more. She isn't going to move now but that doesn't mean after everything calms down she still wont. You have waited 2 years whats a little more for the woman you love? If you really want to show her some support stop talking about the move and just focus on showing you really love her so she will forget her reservations about moving.
If you ever need to talk you can PM me