Roommate is weird. Shock that girls are like this also!!?????

I am in hostel Q. My roommate is lil weird. She avoid bathing for continuous 3-4 days. She is unhygienic. But things got really bad when i saw her pleasuring herself at 3 a.m with both the lights on. By avoiding this i slept and when i woke up at 5 am still she was doing it. I did complaint against her and asked caretakers to change her room cause even my washroom sharing mates are tired of her and her uncleanliness activities. From starting of semester, she never used to kept washroom clean after her use and sometimes we need to clean that toilet after her use. We did complaint but they said they can’t shift her cause its her personal space and thing but they said to change room for all 3 of us [ me and my washroom sharing mates] . I want her to go from room. Kindly help and tell me what shall be done.