Oh Cara Kay- she gets up in the middle of the night to go to the bathroom and then closes her door behind her.
For some reason she hasn't figured out how to get back in her room once she closes the door. I guess she is too sleepy to figure it all out.
This is how I found her at 5:20 before I left to go hiking. I picked her up and put her back in bed. I have no idea how long she had been sleeping on the floor like this.