Oh, she'd known, from back when she'd pranked Umbridge's office with Katara and Sokka. She'd just hoped most of the teachers had no idea the cameras were there.

And detention sounded boring.

"Pink hair is rather distinctive on tape, isn't it?" she mused. "I thought it was a very nice present, much better than a boring apple for the teacher. Should we have put a bow on it? I tried to sculpt one out of ice cream, but it melted and I ate it."