I'm a health care provider, and find that many of my colleagues don't know how to approach or deal with addiction. So 1) the addict minimizes the issue or 2) the health care provider minimizes the issue. Ugh.
2 bottles of wine a night is an addiction. No normal person needs that much alcohol, the brain would tell them at some point that they've had enough. The A brain will never tell them that. I had the same initial reaction reading your post as atalose did. I'd bet the farm that alcohol played a part in her divorce. A's are great at deflecting blame.
Nothing you can do to change her path, that is up to her. But you can change your path. AlAnon is a great idea, you will find a tremendous amount of support and experience there. Learn to set boundaries in your life. Find a relationship that brings you peace, not worry.