Sounds like you've got a great plan for you. Glad to hear it, and glad to hear you're putting your own well-being first.
Change for her will come in the form of actions, not words. Lots of alcoholics and addicts pay lip service to the notion of having a problem or getting help, but many do not follow through. Watch what she does. Don't listen to what she says. Support her, but from a safe distance. Good luck.