I would contact a lawyer and have him/her review this so called agreement and make changes as necessary now. If she's planning to move out, then something needs to be done to address the house issue.

I do agree w/getting your daughters into therapy as soon as possible.

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.