It drives me nuts that she doesn't realize what a horrible mistake she could be making, and that all she has to do take a step back and consider the alternatives, MC for one.
It's something she needs to work out for herself, she needs to live it for a while, maybe she will feel that it's a horrible mistake, maybe not.
On my first marriage, she couldn't chuck me out of the house quick enough, we were in her words "Room mates", "out of love" and "Done". All my suggestions of MC fell on deaf ears, and me telling her it might me a terrible mistake, well that got a laugh.
Fast forward, 1 year, I'd moved on, she could see it, I'd detached. She was the one suggesting MC, and at one point was desperate for a reconcilliation At that point the damage had been done and I could never have gone back
