As I've said in earlier posts, you need to step back a bit. Take care of yourself for a while and let your friend sort out her life on her terms. At the moment it appears that she is just dragging you down. You've done all you can at the moment, put the ball is in her court and let her make the next move. Don't let the drama in her life keep you from moving forward. You are doing everything you can to fix someone that at the moment doesn't want to be fixed or doesn't think she is broken. Concentrate on the friends that support you. You can still be her friend if she needs one, give her space, if she is going to fall it's not your responsibility to pick her up.