SoloJohn,
She may be learning a small lesson right now. That lesson that says--wherever you go, there you are. As in you can't run away from yourself.
If I was that deep in substance abuse I would probably try changing locations too. Try anything because the horror that I was the cause, all by myself, would be a hard thing to accept. (I don't abuse substances btw!) Just imagining what kind of depths I would have to go to to finally understand that changing exterior things, doesn't change who I am.
Seems that is where she is at, and that means she is a long way mentally from accepting what she has become. How long will it take her timewise to accept? Who knows...tomorrow...or possibly never.
That's why we focus on how to help you here, not her. That part is up to her.
I agree with others you are being quite the hero to everyone...are you taking care of your emotional needs? You deserve the kindness from yourself too, you know.