What should my next move be? Complete detachment and just let her go?
Yes.
Right now, you don't offer her any reason to stay, and more reasons to go then she had to begin with.
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