MissB,
I went to the AA World Convention in July (in San Antonio) and one of the speakers was talking about his wife. He said, "God bless our wonderful Al-Anons--we get a LOT of 'transfers' from them."
He got a big laugh--there are a lot of us "double winners" out there. My own drinking didn't go out of control (even though it was heavy at times) until after I was no longer living with any alcoholics.
Alcoholism doesn't respect who you are or what you've gone through with someone else. Maybe you can trigger it by drinking, but neither you nor anyone else gets up one day and decides, "Life is a bit dull, I think I'll develop a deadly, progressive disease!"
Stay honest with yourself. If you find you can't control your drinking on a reliable basis or stop when you intend to on a reliable basis, it's better to stop before things get worse.