There's more to DBing than just saving your M. To me it helped me saved me from the person I have become after the bomb. It re-connected me to the person I once was.
Show your W your strength, that you can move on forward without her. She's in a fantasy she will realize that the grass isn't greener on the other side. I'm glad you see that you are not an option not a plan B. I'm glad you're not sugar coating the OM he is a roadblock to your M right now...but you have no choice right now but to let her go her path and when she comes back make her work for it.
You can not stop her if she wants a D, give it to her and let her face the reality of her decision.
Good luck keep us posted.
Newman
me40; W43 M18; T~20 D18; S13 & S3 bomb 5/9/11 EA busted 4/30/12; 9/4/12; 4/29/13; 6/10/13 same OM
Separated 4/1/14
"Even a flicker of light will shine through darkness-12/25/2012"....better days ahead.