Okay define “signed a divorce” when one person divorces another the person being divorced actually doesn’t have to sign anything. My divorce degree was finalized in Aug and I didn’t sign a thing.
Did he sign a separation agreement? If so then you need to read that agreement. It is binding (if they both signed it and it is notarized).
Okay, she moved out. Change the locks and tell her not to come back. As to her property… If it isn’t in that separation agreement and the divorce becomes final it belongs to him. He can dispose of it as he sees fit.
As to the upkeep of the house. Do they own the house together? If so she may be liable for half the repairs and upkeep. He will probably have to sue her to get it.
Divorces work this way: one person files. The notices are sent to the other person(or their attorney). The filing person (or their attorney) must give the other party at least 14 days to respond. Then if no response they file for a summary judgment hearing. At this hearing the judge signs the summary judgment of divorce and it is done.
The property is a completly separate issue.
I am sorry you father is going through this.