"You could just not hold your wand and tell me what the incantation and the movement are," she points out. "I've been able to do a couple spells just out of books."
"All right," laughs Bella, and she writes this down on her growing list of things to check out in the library when she has a chance after Social Studies, her last class of the day.
"New friend?" inquires Sherlock.
"Maybe," says Bella. "Feral, this is my roommate Sherlock and his sister Tony, Sherlock and Tony, this is Feral, I have Magical Defense with him and he's in Charms with us too."
Bella opens the door to the Charms classroom and picks a desk in a cluster of empty ones and gets out her textbook.
"Why don't you have a book?" Bella asks Feral in an undertone.
"Okay, but switch seats with me, then, if you're on my right then my notebook will be between you and the textbook," shrugs Bella, getting up.
This lesson is on levitation; after various students are called on to read textbook paragraphs aloud and the teacher comments on the described features of the spell, they get assorted light objects (feathers, bits of tissue paper, leaves) to attempt to levitate. The teacher demonstrates - she's working with a book instead, but assures them that the principle is the same and the light objects are just about psychological barriers - and then has them set about their work.
Bella swishes-and-flicks with great care at her provided feather. She doesn't get it right away, so she tries again.
She gives him a look over her shoulder, then cracks up and picks the feather out of her hair to hand back to him.
Her feather twitches. Encouraged, she repeats herself.
He slashes his wand at it and says, "Exstinguo!" and the fire abruptly goes out. The charred remnants of the feather drift back down onto his desk in a shower of ash.
She writes this incantation down, then says, "Is that a hazard of this spell or of you?"
He sighs, and tries levitating his charred part-feather. It flips over on the table and breaks in half, scattering more fragments of ash. Without comment, the teacher comes up to provide him with a leaf instead.
"That sounds really inconvenient. No one knows how to make it stop? Wingardium leviosa!" Bella's feather rises two inches, then settles gracefully back on top of her desk.