At Sam's words, Audrey froze, her brows furrowing. Had she been showing off? She hadn't meant to! Belatedly, she realised that her earlier snerk could've been taken as a mean, conceited jab, which wasn't how she'd meant it at all. "I..." she started worriedly, then spotted Sam's wink and relaxed visibly.
"I can't help being good at transfiguration!" She grinned widely, sticking her tongue out at Sam and wrinkling her nose pleasantly.