Limbo is no place to be. Walk two paths - one that allows the door to remain open to working on the M (if you want that AND she is willing to DO THE WORK) and the other moving on with your new life.
She is either coming back or she's already gone. I don't think she will decide to come back as long as the status quo remains unchanged. But, this cannot be the reason you are moving forward. You are moving forward for YOU, and no other reason.
