Are you seeing a counselor at all? She might be more accepting of your attempts to change if she knows you are actually talking to someone.
I am glad to see that you are taking the long view. While I do agree with DLS that you can't hang in limbo forever, you have barely begun the process. You both need time -- you need to make sure that the changes you want to make will stick, and she needs to accept that the changes you are making are genuine and lasting.
Me: 44, Wife: 39 M: 17 years T: 20 years Bomb on 08/25/09 1/13/10: MC started 1/28/10, 2/8/10: More bombs 8/28/10: Wife moved out No talk of D, no movement