I am so sorry that you are dealing with this situation. It is never easy, but, you have found a safe place to post/vent your frustrations.
As for your residence, move forward as you are doing. If your WW wants the place, she can go through the proper channels to purchase it, if she can afford it. You want a solid "sold" on the property so that you can move forward.
Continue moving forward, protect your assets and be prepared for wrenches to be tossed in from time to time. She is a very confused individual who does not have a clue as to what she is losing. Right now, she wants freedom to do whatever she wants, i.e., like a rebelling teen, who doesn't realize the consequences of her actions are going to come back and bite her later.
Unless she can offer you proof right now about the financing for the home...continue as you have been.
I know that this is difficult, but keep as much of your time focused on you and what you need to do to move forward. Come here to vent....we all have been where you are right now and some of the posters are going through the same type of stuff.
P.S. Be sure you document everything!
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.