[She may have been hesitating, but the news made Randall laugh-- not in a rude way, he was genuinely amused!]

Oh, you shouldn't worry about that-- I couldn't tell you how many things I accidentally set ablaze when I was trying to learn Pyrokinesis. [Heeee wasn't very good at that one.]

But it sounds like you've got the right idea. Practice makes perfect! And I can't imagine anyone would disapprove.