"Did you really blow up your aunt?" Hermione asked seriously while Ron howled with laughter. Mayumi seems to find her caramel brittles more interesting.
"I didn't mean to— I just lost control."
Finally leaving her brittles be, Mayumi pats him on the back.
"Oh no worries, we all have these little episodes." She comforted, "Me included! But I don't blow up my aunts. I blow up something else." A pause, "Literally."
Ron stopped laughing, and suddenly looked a little too miserable.
"The kitchen." He lamented, "Our poor, poor kitchen."