That whole bird-nesting thing seems like a set up for major awkwardness, IMO. In theory, I like the idea of the kids being able to stay in one home however, logistically, it seems like it would make it very difficult for you to move on if she is intent on making this a permanent arrangement. You need to have your own space. I can’t imagine going into the same apartment every other week and wondering who she was there with the week before and what they were doing. I think it really would be death by a thousand cuts. If I were you, I would just respond with a hard “no”... end of story. If she’s mad, so what. She knows where the front door is. Honestly, she is expecting way too much given that she is the only person who wants this. I don’t think my H even considered once that I would be the one to move out. He gave me the option, of course, but he knew I would never take him up on it. If anyone is going to be significantly inconvenienced by this forced separation, he knows it should be him. Your W needs to know this as well. (((HUGS)))