I can tell you from personal experience....never agree to "help" your W stay focused on her diet b/c she may kill you before it's over. You deifinatly are the "heavy" in that case. All you can really work on is you and I think she felt inspired when you went those two weeks that you proved you did not "need" a drink and it made her feel good. So, why not continue to do that except for a rare social drink? Just do it for yourself and to make her feel good about you. But don't fall into that weight trick b/c it doesn't work between M couples....lol.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!