AITAH for wanting to report my roommate to the manager after she choked me even though I promised I wouldn't?

I live in a university dormitory I used to struggle a lot in my previous room because my neighbors were constantly singing and making noise I complained to the director several times but nothing changed so I decided to request a room change I found an available room with another girl applied to the housing office and was officially transferred when I first went there my new roommate wasn’t there I asked several girls in the hallway about her but no one knew where she was When I entered the room I was shocked to see that it was completely filled with her belongings. Both beds both desks and both closets were fully occupied by her stuff I immediately went to the housing supervisor and asked for her phone number so I could contact her and ask her to clear my side The supervisor’s response surprised me she said "No need to call her just move her things from your bed desk and side of the closet and put your belongings there instead" I did as she said and set up my side Later the girl came back. When she saw me she choked me and pushed me hard if her friend who was with her hadn’t intervened I don’t think she would have stopped her friend saved me After we calmed down we went to dorm security. She admitted that she had choked and pushed me but claimed it was my fault because I touched her things she accused me of making the room messy and said she would delete the video she had taken if I promised not to tell the director We left the security office thinking it was resolved but I now feel deeply conflicted I feel my dignity was violated and I am scared I know that logically I should tell the director because my safety is their responsibility but I promised her I wouldn’t I don’t want to break my promise at the same time I feel that my life was threatened and I should have protected myself the feeling of humiliation keeps haunting me Would I be wrong if I broke my promise and spoke to the director? Side note: The complicated part is that I still live in the same room with her