AA is not the only way. The only criticism I have about this sight is that AA is constantly shoved down your throat - and the general census seems to be if you don't do AA, that you will fail.
I think exploring alternatives is wonderful, if your wife has any insight on something new it would be great if you posted it! My only concern would be if she needs to go to detox - that can be dangerous to do on your own.
There are also other support groups, besides AA that are available.
Good luck to you and your wife! Take care
FallGirl