I am new here and don't know anything. Although I'm a lawyer I am not a family lawyer and the laws of every state are different. So I can't offer you anything on the legal perspective and there are certainly cooler heads here on the DB perspective.
But, what if you are wrong? Are you pushing away unnecessarily? Even if you move into the MBR, do you need a declaration about it? Do you need to tie it to her or her actions?
Why not just say this nesting thing is not working well for me. I'm back in the MBR. You are welcome to join me or sleep in the guest room. I hope we can still keep working on the MR (if that is what you want).
I just think declarations and mind reading (from a very recently reformed mind reader) are not a good idea.
I hope things improve for you and the anger subsides. You might want to cool off a bit before you do anything.
