Kyh I'm glad your S had a good birthday. Not too sure what to say about your W's behaviour with looking for a place, but it sounds to me like you are doing great, you are dealing with her crazy like a pro.
"There's nothing sadder than a conman conning himself"
“There is freedom waiting for you, On the breezes of the sky, And you ask "What if I fall?" Oh but my darling, What if you fly?”