Ellie nodded. Nice professor.

She didn't like all this concentrating, though. But she remembered exactly what the hairtie looked like. Well, duh, of course she did.

She pictured it shrinking, the pendant going away, turning back to black as it did so, one solid stand. "ReverTO!" she said, wand in hand, making sure to emphasize the right syllable...

And nothing happened... Cool... not.

"Professor, can you show me the wand movement again? Just to be sure..." Of course, she didn't expect it to change, really. But just to be safe, she wanted to make sure she was doing it right.