What happens to the bottles? A bottle a night seems like a lot. Especially if they're rattling around in a recycling bin - after a week even she must notice there are many wine bottles.
I stopped drinking because I didn't like the fact that I drank 2 glasses every night. Every so often it would be 3. Only once in awhile it was a whole bottle. Of course everyone is different. It is the person who has the drinking problem who needs to face it and everyone's different and everyone's "bottom" is different.
And you know what, I joined Al Anon because of my ex (alcoholic/addict) husband...and while I was in Al Anon I realized that I needed to take a look at my own drinking.
You are right to be concerned about her. You have some work cut out for you and it will help you so much. Her disease turns into your dis-ease. Get help and good luck!!