By the time alcoholism has set in (which seems to be the case here), it really doesn't matter what is going on in the alcoholic's life in terms of whether he or she drinks. It's a sunny day, it's a cloudy day, I lost my job, I got a promotion, the stock market is up, the stock market is down.
Sometimes someone will BEGIN to drink because of stress, but only a portion of those people will become alcoholics. Some never do, and when the stressor ends, the overdrinking ends.
So what happened before is irrelevant to what's going on now. Anything will be offered as an excuse, including blaming you. Do you really need that in your life after all YOU have been through?