The recorded deed is the starting point for seeing whose names are on title. In an Illinois divorce, a court can classify property and divide marital property in “just proportions.” That is a rule about the court's division of property; it does not by itself say who must sign a particular deed or require every house to be sold.
A written agreement or court order may address the house or what happens before it is sold. The title company checks the deed and relevant documents to confirm which signatures this closing needs. If an order mentions the property, ask an Illinois family-law attorney what it means for your situation.
You can talk with us while those details are being checked. You do not have to settle every disagreement about repairs, contractors, or showings first.