"I have a charm too," he says conversationally, shrugging and veering away from the subject of just how much of a cheat the witch was.
He taps his head. "Charmed mind." Hmm, how to explain 'mind'... Maybe she'll get it by the gesture alone.
"If I can remember something, I remember it right..." He contemplates how to demonstrate "remember", grabs a sheet of paper, writes a sequence of digits on it, hands it to her so he can't see it, recites them aloud - "I remember those numbers. I don't have to look at them to say them. I won't say them backwards or miss one or put in one that isn't there. And," he continues, "if someone tries to do magic to my mind instead of to my body, it doesn't work well, and I can think faster than a lot of people."