Welcome..
My Mom is an "A" has been drinking for over 60 years, and, there is no end in sight. She is now 81, and keep chugging along...go figure.
I can't add much to the others, all I can say is that you need to work on you, there is nothing and I mean nothing you can do to stop her from drinking. I've tried everything at least a 100 times, and only ended up holding the empty bottle.
Keep posting, it will help.