Update -
I just found she's in the hospital.
One of her friends finally came over and explained to all of us on the floor. It seems like she had a total nervous breakdown and had to be admitted to the hospital to get help.
I had been recieveing wierd text messages from her today (I ask "where are you?" and she texts back "Food"). Turns out she's been sending wierd one-word text messages to the whole floor (including the RA).
Her friend said it would be at least a week before she could come back.
I just feel so sad for her. She was extremely homesick, though I had no idea it was this bad (considering she lives 30 minutes away). I think going out to a party last thursday night may have helped trigger it (she's really against drinking since a relative was killed in a drunk driving incident, then seeing all the stuff at a frat party).
I'm just glad she's getting help. I was cleaning her side of the room earlier today so she wouldn't have to do it once she gets back, and one of her notebooks was open on the floor. I happened to see some of the writing on the page, and it was some pretty twisted stuff. I mean really chilling.