Aloha,If the mother is already staying there, past the stated "guest" period per your Rental Agreement, then you have a couple options. 1) send a notice of violation to the daughter and follow through with your violation policy...ultimately eviction for other than rent owed, hopefully.

From our experience My wife  ( Oregon WA agent)  and my Daughter ( las Vegas agent) I have referred a few to my wife and they have transacted but our sales points are north of 400k  and well above and many are relocating its not all investors..

I needed somewhere safe for my daughter and I to live, and my first property was not in a good area.

There was a mother-daughter pair of investors from OK and AZ/NM, I think the mom's name of Sandra.

My daughter is my whole world and I love spending time with her.

Another lady was looking for her daughter, but she did ask if she could re-paint (good sign?).

We got a ton of good ones from 'Stay Here'.I had a friend whose daughter was on one of the HGTV shows where they find you 3 houses and you have to choose from them.

Does anyone know if after buying a house, if u can immediately convert it to a mother/daughter house or if u need to wait a year after purchasing to do so??

If someone signs a 2 year lease and wants to paint their daughters room pink, I'm willing to allow that because it shows me they want to make the house their home.

I found this mother-daughter unit in a village (high taxes) and it needed significant work.