I would call the police to meet you at her house to get your things, so there is no trouble there. Don't try to do it without the police there.
You are going to have to talk to the circuit clerk, state attorney about filing a judgment against her for the balance owed.
If you have any joint debt, you want to call them creditors and close out them accounts. If there is a balance remaining you will want to keep up payments so you don't default on them. Pay them off and close them out.
Same thing with checking and savings accounts.
Good luck with this matter.