Hi, rigger, and welcome. There is a lot of good information about alcohol dependency in the stickies embedded at the top of the main menu. Well worth reading.
My first go to in a situation such as you describe is Al-Anon. It is an amazing fellowship for people who are bothered by a loved one's drinking and behavior. At an Al-Anon meeting you will find lots of support from people who have been where you are now.
You can't control your wife's drinking. That she doesn't want outside help tells me, and this is my opinion only, that she is not ready to stop drinking yet.
Maybe she will never be ready. Maybe in time she will want to change. But right now, despite your concern and offers to help, she doesn't want to or, perhaps, feel that she can stop successfully.
I hope you will keep checking in. There is lots of support here.