I am thinking about telling her to not contact me again until she goes back to therapy or begins AA (which I now she won't).
Well if you know she won't do that then maybe just go no contact without having to have the conversation.
It seems like wht you want is for her to stop abusive treatment of you. Maybe ask her if she can do that? Tell her the kind of ph calls that are absolutely unacceptable to you. My guess is you've tried that and since she is an A she refuses to control her nasty behavior etc!!
Whether she goes farther down the toilet or not is really completely out of your hands. Believe it. Contact. No Contact. It has nothing to do with her getting her life together. She has to find the reason and the season to do this for herself. You can stay right out of the way!
If your mind spins and you lose sleep when she does this that seems like a message from yourself to "steer clear."
peace-
b.