Well perhaps something has 'clicked' and she has realised that it might be a little drastic.
I found (as a sufferer) that when my partner was close to breaking, it really helped to just sit down and tell her that you have something to say, and you just need to get it out, and then she can do what she needs to do.
This is what I told my partner when we were going through an extremely rough patch:
I know I have a problem, but right now the only thing that matters to me is what it has done to you.
I know you need to go because you feel it is the best for you right now, but I just want to say thank you for everything you have put up with, and helped me with; without it, I wouldn't be seeking help like I am now.
It doesn't matter how far away you move, I will still always love you, and even if you need a break, I'm happy to give you some space, and let you contact me when you are ready.
I'm really sorry for being such an angry prick, and getting mad so easily, please understand that I'm having a really hard time controlling it, but I will always try extra hard for you because you are special to me, and I want to hurt you the least.
My anger is never personal towards you, but before you think that it's a cop out, I just want to say that regardless of why or how it happened, I'm still sorry you had to deal with it.
If you have to go, go, I understand that you need to think of your own health too, but if you ever think of staying, or coming back, even if it is for a night as friends, I will still continue to try for you, I can't promise fast results, but I promise I will try.
I don't know if this helps at all, but I wish you all the best regardless.
xox
Bubzie.