Snape muttered under his breath and left, heading straight for the bathroom. He emerged fifteen minutes later, clean and wearing a thick, black bathrobe. After he re-dressed in his room, he immediately returned to the guest room and found Hermione sitting in the chair beside the bed, reading aloud from one of the books from the study. He recognised it as being one of the old Transfiguration texts from one of Minerva’s classes.