Only you can determine what's right for you. Your last paragraph does make it sound like her alcoholism was *no biggie*.
I doubt that.
If you could have lived with it she would t be moving. If alcohol was not her first priority she would have quit.
Sadness brings regret. You are turning the last year I to a fairy tale when you start the path of "maybe it wasn't that bad".
I'm sorry because it is painful. Have you in my thoughts. Stay on the board and post as you go along. It will get better.
And P. S . A new pet is never a bad idea. They heal a lot.