"Legilimens."
(She'd tell him that blinking would mess up the spell, but as new as she is at it, she thinks talking would also mess up the spell. She can always do it over again.)
"I didn't expect it to work the first time," she remarks. "Maybe I just got lucky. I do need eye contact to sustain, but the book says later I'll only need it to establish."
"Yeah! This time I'll see if I can do memories, I'm supposed to be able to do memories, what should I look for?"
She looks. It's like squinting, to get memories instead of just surface thoughts, but -
She grins, and watches till her eyes itch and she has to blink again. "Neat. Now I know how hard it is when you don't know any Occlumency," she says. "What if you try to fight me off without any Occlumency practice, want to try that?"
"Hmm," says Bella. "Is there anything you don't want me to see - I mean I won't look for it if you really don't, but anything you could be more energetic about shooing me away from?"
"...Oh. Yeah, there's that. Okay. So, the Occlumency books aren't very - stepwise - but they talk about having a clear mind, and about moving like water away from the attack, and one of them mentioned meditating. Can you work with that or should I invent something with more detail for you?"
"Okay! Lemme know when you think you have something. I'm gonna go outside and play with my new broomstick," beams Bella.
And Bella runs off and plays with her new broomstick. She decides it needs a name, and goes with Terpsichore, to match Euterpe.