There's lots of good advice here, Strongbird.
I told very, very few people when I stopped drinking. I was overwhelmed with guilt and shame for a long time in early sobriety and, though I was honest with myself and my immediate family, I did not want to talk about my alcoholism with anyone else, at that time.
When I did tell my mother, who was also an alcholic, she said, 'So, just have one glass of wine then'. It was good that I waited until I was on firmer ground before I dealt with her.