You're still clinging to the hope that this is all temporary and if you just say or do the right thing then all will go right back to normal. But that is not how this works. She is DONE, make no mistake about it. You have got to leave her alone and work on YOU. You've got to give her LOTS of time and space to sort things out on her own. When she does she may very well change her mind about the M, but that is months down the road, maybe even a year or more. You are still doing things to try and save the M instead of saving yourself. Work on you first, then maybe the M will follow.
This is a great reminder for many of us. We all come to the forum to save our M, but we should really be focusing on what we can control, which is ourselves.