I would highly recommend going to ALANON. For sure you are not going to fix your wife only she can do that but you can learn coping skills. You will learn about codependency, detachment, enabling, and support.
In the final analysis if she is an alcoholic she will only get worse. She may decide she has a problem or not.
There is a ton of material written about having an addict in your life. Before I would make any major decisions I would learn everything I could about the disease of alcoholism.