I think you should be grateful that she has the friend she has, because it seems to me that her friend made her realise that your wife does still love you.
It was the Alcoholic Drunken Man you had become, she hated.
Because the ADM, was not the man she married.
You had become a different person.
Alcohol changes who you are, it does. And stopping the alcohol has made you feel better.
And it's made you happier.
And she can see the man she married, once again.
I'm sure she does love you.
And I'm equally sure you are not out of the woods, yet.
I would suggest talking to her. Ask her what she needs from you.
Ask her if she hated the alcoholic you had become, and does she still love you, the man she married?
I have a feeling she will say yes.
But I hope you can keep this up, because it looks to me as if you have salvation at your fingertips.
Don't let what you think, bring you down.
Talk.
Be there for her and tell her you will do whatever you can to make it good, but that you need her support, love and input.
Ask her to tell you what she needs.
And work together, to achieve it together.
Good luck stay dry, be well.