How to repay an agent who helped us purchase an off market deal

[Winn Merwin]

My wife and I closed on a duplex for investment today. It was purchased off market but we had help from her Aunt who is a real estate agent. While she volunteered to help, we would like to repay the service in some way. We found the property through a personal contact and did most of the day to day work to get it to close ourselves. Her advice was invaluable and she made a few phone calls for us as well. Should we pay her some sort of consulting fee? What is the best way to repay her and express our gratitude/compensate her for her time?

Thanks in advance,

Winn and Kaitlin Merwin