Alcohol is rarely a significant theme in a marriage unless one of the partners is addicted. 30 years is a long time to have such a theme.
She will likely drink again soon and when she does, and when she sees the look on your face when she does, she will try to hurt you.
When she hurts you, try your very best to believe you matter, you are important, you are valuable, you have gifts and strengths and beautiful qualities.
When she hates you because of that look on your face, try to remember those things.