Yes, Patricia may well have lost the equity in the divorce.
Banks often still refuse to allow the 'owner' to sell when in even the slighest perceived negative equity. The banks get their money back by attaching an alleged debt to the previous owner up to 12 years down the line, often when they are just getting back on their feet.
This alleged debt will include everything - arrears, cleaning the house after repossession, maintenance after repossession, changing the locks, etc etc. Bloody awful.