I don't have personal experience like yours, but I can say that daily alcohol can make it hard to learn emotional lessons. If you can always change your feelings by drinking, then you don't really get much practice in changing your feelings without resorting todrinking. That means that for some people, stopping drinking ushers in a new way of managing emotional ups and downs.
I'm sorry for your pain. I hope things work out for the best. Al-Anon is a good resource; you can be with people who have lived through similar things.