Originally Posted by
OldPaint 
I've told her in the past that if she drinks I will not stay with her. That got her to stop for several years...now she has slipped back. Do I use the same approach? Is there anything I could do to make the "quitting" actually stick?
Don't say it unless you mean it and don't say it with the intent of changing her. You cannot control or change her. Only she can do that. Only you can keep your focus on you and what you want in your life.