"And lastly, Headmistress, if you must know, Ron has been tormenting me. In fact–" Hermione stood and raised her ankle slightly, showing the puffy bruise, "he had just cast a spell which froze the ground and made me slip. It wasn’t just tonight–he freezes something or leaves me nasty notes every day. Just to get back at me. It’s great entertainment for Seamus, Dean, and the other boys. So please, forgive me if I might have lost control of my magic. But it wasn’t on purpose."