Knock on the bathroom door.

As you ponder your unfamiliar situation, you begin to fear the worst. You bite your lip, and begin to walk over to the bathroom, wondering what you should do. Maybe she got hurt, and is struggling.

However, you hesitate as you stand there. There is a chance that she just really needed a shower. As you wait, you sense... something. You aren't quite sure what, but it feels almost like a fog is setting upon the room. It sets in that it might be the universe, and you're now even more scared. What if it really messes with her? You decide to not chance it, and knock on the door.

"Come in," Your roommate says, and before you realize the absurdity of it, you open the door and walk in.