AIO to my roommate cutting a piece of my hair off in my sleep?

So I’m in a sober living house and this morning i noticed a chunk of my hair from the bottom of my scalp missing because when I brushed my hair nothing there brushed like it does normally/like on the other side. Everyone I’ve shown says it looks like someone cut a chunk off. I got a new roommate the other day and she’s been… excessive. Everyone else is highly off put by her nonstop talking and mannerisms and sexual comments. Last night I vaguely remember her being near me while I was asleep but I’m not sure. I do know she got up before me. Today I had it when i discovered the chunk of hair missing and I switched rooms, but she’s still in the house and I have to deal with her everyday during groups and such. Am I overreacting by switching rooms? I talked to the program director and she’s letting me decide on if she talks to her about it and idk if i should have her say something or what to say if said roommate asks me why i switched rooms.