She is going through a lot right now.
And so are you! The only thing you can do is to take care of yourself, let her muddle through in her own way and in her own time, she has been self medicating with alcohol for along time, it's gone now, so now life has completely changed for her. She needs a good strong program to get through all of this.
Try not to take anything personally, if you are spending time with her, don't stay so long, if you need support try to reach out, counseling or alanon may be helpful for you. The idea that the alcoholic will be all better once the booze is removed is a nice fantasy but just no true.
Take good care of you!!! Katie