Going through the EXACT same thing myself, 1.5 year relationship ended 3 weeks ago. Its a tough combo of feelings and emotions to deal with on top of quitting alcohol. My advice is let her go, you'll likely want to contact her to try and feel better but just don't. After 10 days I wrote mine a letter explaining everything that went wrong with us and that she disliked was because of my closet drinking that she didn't know about.
It explained everything and I did it to let her know the absolute truth, at first she said it explained everything then she blew up saying I was a jerk, liar and that she hated me and to never contact her again. I wished her a bright future, love, happiness and joy for her and her family, said I was sorry about 500 times and then said goodbye.
It felt good getting it off my chest but I am still a little upset how she left on bad terms, but that's my fault and something I will have to live with I guess.