It's empty.

You're not sure what the right etiquette is for having a roommate, but you decide to play it safe. You knock on the door and await a response. When you don't hear a thing, you use your key and enter, finding it empty. More than empty, really. All of Kara's stuff is gone, so it's just your made bed and desk now, while the other set is bare. You do find a note left on your bed though, probably explaining things:

Sam,

I convinced an administrator that we should get separate rooms, due to the whole gender thing. No offense, but I did want my own room, I figured you'd want the same. I guess you could invite someone else to live with you if you wanted to, though. I'll still be around if you want help with anything.

Kara

You see she's written her new dorm room number and phone number down for you, but you doubt you'll use it. She didn't seem like your type of friend. Still, though, it's good to know you can get help when you need it. You add the number to your phone and toss the note. It's getting dark out, and you're basically done for the day anyway, so you kick off your shoes and plop down on your bed. You fiddle around on your phone for a bit, trying to forget about everything that has happened today, but it doesn't do much good.

It's not quite late enough for you to want to get to sleep yet, but you think you could anyway if you're ready. Other than that, you're not sure if you'd rather do something else tonight, but you don't have the energy for anything outside of your dorm room.