Manage a rental for my Mother?

[Craig Thurman]

My Mom has a single family rental property where we both live in Oregon and I would like to help save  her some money, starting this year, by managing her rental when I take over management of the 3 rentals my wife and I have. I am unsure if that is possible at all or if it depends on circumstances such as if I am compensated or if I have any ownership stake. I don't have ownership stake and I am happy to do it for little or no compensation. 

I am hoping for concrete answers if anyone has them. 

Thank you to anyone that takes the time to reply.