That's just about enough to short Lisa out; he said it with such a straight face at first she almost can't believe it. If she were reading this she'd be screaming at her screen, but she's not - he's here so he'd hear that and probably worry about her even more, bless him - so instead her face is on fire and she's hiding it behind her hair even more... but she still isn't letting go of his hand, either.

"I-I, uh, y-yeah, I know, I just! It's too early in the day to burn something like that! What if I trip and break my leg or something, or-" She forces that train of thought to a screeching halt. "N-never mind! Um, I... ugh, I can't think straight." She can't take a deep enough breath to get her head properly sorted; she can almost feel steam coming out of her ears. She's trying, please forgive her. "But- thank you. I... get what you mean, I think."

Somehow, she feels better than she did when he'd just finished whatever that spell he worked was. How strange.