We had to have a big "hearing" with the Director of Housing, during which this roommate repeated in front of everyone that she intended to acquire a gun and kill us all. (We only got the hearing after my dad called the Director of Housing and informed him that if they couldn't guarantee my safety against documented threats in my own dorm room, he planned to arm me with a 9mm handgun so I could at least defend myself. I think this was an empty threat -- I've never fired a gun in my life, although my dad owns several -- but it worked to get the hearing.)
After the hearing, they ended up moving her to a room (a single) on a different floor in the same building and changed the locks on our dorm room door. They also told her she had to stay 50' away from us.
I am pretty sure that her goal was to intimidate us, not actually kill us -- but it is rather unnerving to wake up with her standing over your bed talking about how, once she gets her gun, you'll be dead. I wanted her out of there (and farther than a different floor!) Moving her to a different floor in the building was a joke. After she moved out, someone liked to slide anonymous nasty notes under our door in the middle of the night. We never saw her do it, but I'm pretty positive it was her.
She suddenly left the school during the spring. I am not sure if she did something to someone else and got expelled, or if she flunked out, or what. I still have *no* idea what any of us did to make her hate us. None of us knew each other when we moved in together and I think all of us (except her) attempted to get along. The problems became evident within the first few weeks while everyone was still on their best behavior.
I will say one thing though -- I would encourage my kids to move in with someone they know when they go to college. I knew some girls I could have roomed with. They weren't great friends... but at this point, I think "the devil you know is better than the one you don't!" I am pretty sure none of the girls I knew would have threatened to kill me. Annoyed me perhaps, but not threatened to kill me! But I wanted to use the college experience as a chance to meet new and different people. I met some "different" people alright!
This was in 1990. With the school/college shootings in recent years, I wonder if they'd take the threat more seriously now? They didn't take it *at all* seriously then.