Let's go with that.
You look at your sleeping friend. She is sleeping soundly, but on top of the covers, for whatever reason. You take this time to look around the room a bit more.
The bed itself seems quite smooth, as if it has recently been made. You can see where you rolled off, and see that your pillow went with you, sans the stuffing, which lies in a small, neat pile where the pillow should be.
The rising sun shines directly through the window, so you must assume it faces east. To your south, behind you, the door is firmly shut. To the west, the door is slightly ajar.