How important is it to you to get the MBR? If it's not super high on your priority list, I'd back off. What's the plan if you guys are still in the same household when your oldest child returns? Is there a spare guest bedroom? I would control what you can control, and that's only you. So personally, I'd sleep elsewhere until she stops spinning her wheels.
7 years ago, even though H was the one to want to D, I was the one who left (with a 3 week old baby). My friends and family thought I was crazy. "He should be the one moving out! He wants the D!" Ok, well, I had no one near me in my house. So I moved in with my dad and stepmother, an hour from me. H then had to deal with the big empty house, with it's lawn that I didn't know how to mow and it's dishwasher that kept breaking. He had no one to blame but himself when sh!t hit the fan. Meanwhile, I was making memories with my newborn and having other family members support us. 6 months later, when I decided to get my own apt bc the drive to work was too much, H asked me to come home.
Just bc they're the one to say they want the D, doesn't mean it's a terrible idea to be the one that moves away for a bit.
