default on a mobile home contract

[Dennis Watkins]

Hi, I need your opinion and help. I sold a mobile home in 2007 on contract for 1 yr. It was signed agreed on all parties. However the buyer stopped paying me before the contract was up and appearently refuses to pay. Money is still due. She owes a balance of $960. Since the contract has expired and I refuse to write another for because I don't think I will be paid off. I sent her a letter last year and have not heard from her until I got handed a suppeana because now she is suing me for some unknown reason. I have a lawyer and showed him the contract. He says she doesn't understand why she is suing. She has no grounds the contract has expired and she is in default. He suggested I just get in the mobile home and change the locks, So I did.
What do you think?
Dennis