My tenant is also an agent and wants a fee

[Andrew Hernandez]

I am in the process of renting out my primary residence to a couple. My mother in law, who is an agent listed the property on the MLS and assisted us with the process. She was not going to charge us anything.

Now, the tenant is also an agent and just asked me how we are going to handle agent commission. What? She is mentioning this after already signing the lease and sending first month's payment. Nothing was pre negotiated in terms of commission. Do I have to pay her anything? Any advice is greatly appreciated.