Section 8: Reduce rent to keep current tenant

[Brendan L.]

Just bought a duplex, owner occupied. Current tenant is on section 8, but she doesn't have her kids anymore, so she is overhoused in this 3 bedroom. Housing authority needs me to come down to 650 from 775 for her to be able to stay.

Pro: no vacancy, only her and her boyfriend, so no kids, 2/3 rooms aren't getting used and theoretically less wear and tear. They're clean, reasonable seeming people. 

Con: Lower rent

She likes it there and wants to stay. Are there creative ways for me to get more value despite lower section 8 support? Could I set up a separate agreement for her to pay for "services"? Or ways for me to put more costs onto her, if she is willing (e.g. water bill)?