"There you are," Hermione whispered, even though she was all alone. Maybe she was scared that the walls had ears and all she said was being listened to. "This is not home, Crookshanks, you cannot wander off whenever you feel like it!" she said, taking him in her arms and brushing the fur with her fingers. "Where have you been to?" she asked when she saw that the tip of his nose was purple. It seemed something like dye. Hermione took a towel and tried to wipe it off, managing to take off only some of it.