 She left the library and took the usual route back to the common room so that she didn’t attract attention. It was getting late, but people were still out in the halls, and she didn’t want to be seen where she was going. In a deserted corridor, she took a sharp left and then ran up a few flights of stairs and found herself in a more deserted part of the castle. She took a few shortcuts, thanking the Marauder’s Map in her mind, and made her way to the Hospital Wing.