I would go back and question this w/the realtor. Maybe that can come off the top of the sale or from the escrow account. If there is $6,000 sitting in escrow, maybe they can work that out w/o bugging you.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.