Let a friends daughter move into go to school but she’s a disgusting slob.

So my wife’s best friend daughter moved into to go to college so she wouldn’t have to worry about rent or utilities. We only asked that if she is going to have someone over that we need to meet them and also introduce them to the dogs. We choose to live in a clean house and that she needs to do her dishes and keep her room clean. Neither has been followed. We reached out to my wife’s friend but she didn’t want to intervene with her child. So we live in the mountains and I don’t want her disgusting intolerant behavior to attract rodents to the home. Now I don’t know what to do but ask nicely but she doesn’t seem to care. Any suggestions besides the belts of my childhood? She literally sleeps with trash on her bed like some homeless person. Everything I think of risks messing with my wife’s friendship. How do I fix someone’s shitty parenting..