SP - I am not sure if this is an option for you but why not tell your attny that you are done negotiating? It's not like this is the first proposal you have received.
IMO there are some obvious questions that your W will need to address. Why did she run out and buy the house she did if she had *any* inkling she would want to keep the house you currently live in? She couldn't buy the house she has fast enough and now that it is not all that it's cracked up to be she wants the old (old house = your current house) back. Once again it seems she simply wants to keep her options open for as long as possible about where she lives.
I know the laws differ in your state but eventually I had to tell my attny I was done going back and forth and even listening to any more "proposals" on a matter I was given no choice on. Two years of it simply was too long for the VERY urgent divorce my H demanded. It sounds like you are heading down that road as well.
