**IF** it goes down...or if my sitch went down like that...and I could not afford to keep the house, I would probably plan on renting an apt until I got settled. I would not want to jump immediately into another mortgage, at least for a while until things settled.
Plan for that, but in the mean time...
detatch act like all is well leave her alone take care of yourself take your mind off the stitch (easier said than done!) ..and wait, wait, wait.
