I am not a doctor. I am not a therapist. What I did learn over time: her drinking was taking a hefty toll on my emotional and spiritual livelihood. If your drinking is an issue in your relationship, you may have a drinking problem.
If she drinks the third glass I begin looking for what I'm going to do that evening when she's fallen asleep. If she asks for water, my mind enters into a different set of fantasies that involve her participation. The real joy is that we've had this discussion.
I do recover. I am conscious of when I'm avoiding. I still do it, but I'm doing it less. And I'm learning to take the uncomfortable feelings or worry by the horns and looking the damn bull in the eye and saying, "To hell with you, fear, I'm going in!"