You "told her that [selling the house] is her baby"? And now you're unhappy that she hasn't done the work for the thing you want and she doesn't?
When I assign another adult a task that matters more to me than it does to them, it rarely goes well.
I've come to recognize it as a sign of me trying to control someone else.
Me: 44 H: 44 Kids: 20, 16, 16, and 10 Together/Married: 22 years H announced he was emotionally detached and considering D: 4/4/16 H announced he is going to try to stay and reconnect: 5/1/16