I (26F) have a friend, Mary (24F), who’s been going through a rough time over the past few months and was recently diagnosed with depression. During this time, she’s been spending about two nights a week at my place, sleeping on my couch because she says it makes her feel better. That was fine by me.

About three weeks ago, she asked if she could move in with me for a few months, we didn't specify how long exactly. I agreed, although I was a bit reluctant.

This week, she went on a short trip with her boyfriend and while she was gone, I found clothing moths in my bedroom and living room. I ended up deep-cleaning my entire flat and had to throw out a LOT of stuff, sadly including my beloved couch. There were even moths in her clothes, which I washed and packed in airtight bags.

I told her what happened and said she couldn’t stay at my place anymore. She was completely understanding. But the next day, I was talking to my dad, and he said I was being unfair. He said that I have promised her a place to stay for the next few months and said she could just sleep on the new couch. I explained I didn’t want to buy a new one until I was sure all the moths were really gone.

He told me I was just using that as an excuse because I wanted to live alone again. While it’s true I do prefer living alone and that she hasn’t been the easiest roommate, I would never have just kicked her out. Once I have gotten rid of all those beasts and I have a new couch, she is welcome to come back.

She also still has her own apartment and a few other friends she can stay with if she’s not doing well.

I think I'm in the right, but my mom said my dad might have a point. So, AITAH?