"I...cannot possibly imagine thinking that magic is not real. I can show you any time you like...with something small. I work with light, energy and fire, so anything bigger would need much more room."
After all, the restaurant would probably not like to burn down.
She beams at him. "It's...hard to explain. It's a little like...being so happy you are about to burst, or being so restless that you have to run, or so unhappy that you have to cry. You think of something and...you either do it or you don't, but you can...feel that potential." She frowned, then. "That might not be an adequate explanation..."
The corners of her mouth turn up again. "I shall be sure to, Sam."