You need to take a look at the listing agreement that you signed with your realtors agency. Was it an Exclusive Right of Sale Listing Agreement? When did the listing expire (Termination Date)? Did your relative have any communication with your listing agent regarding the property prior to it's termination? If not and the listing has expired, then you should be fine. However, if your relative did communciate with your agent about the property prior to termination of the contract and purchases the proeprty within a certain number of days after the termination of the contract (The number of days will be noted in your agreement) then your agents agency is entitled to the commision stated in your agreement and they can sue for damages.
It all depends on what was agreed to in your listing ageement.
Teresa M. Fellows
Waterside Realty LLC