I think what her father said to her is a very good thing. You can not control his discussions with his own child.

Okay so she's signed up for school that doesn't mean he can't still wish she would move in with him. He is allowed to have his own hopes and wishes.

As for him taking days off work ??? Again his choice. Are bills being paid? Food on the table? I can't remember if you work or not ??

If she will soon be in school the you need to figure out how to let this go. Sounds like she is making plans and your still in a panic, breath.