My sister-in-law (26F) moved in with my husband (30M) and I (29F) about two months ago, after she broke up with her boyfriend. We offered her our guest room, rent-free, just until she’s ready to get back on her feet.
We only laid out three very simple rules before she moved in: To not spray strong perfumes inside the house, as I have sinuses, not to play loud music, especially late at night, and to clean up after herself.
She agreed immediately, but from day one, she broke all of them.

She broke the rules all the time.
Her perfume was so strong it made the whole hallway stink when she sprayed it in the bathroom. She blasted music through her Bluetooth speaker at midnight, and we had to ask her to turn it down multiple times. And my husband and I would come home from work to dishes piled high in the sink; that time she’d been in the house the whole day. I would then have to wash them as soon as I got home.
Despite all of this, I didn’t say much because I didn’t want to cause any drama, and my husband just pretty much told me to give her some time since she’s still adjusting to a new place.
