George's smile wavered a little when Hermione mentioned Hannah and suddenly remembered why he was here; to make sure the same thing didn't happen to the girl in front of him. He'd brushed up on some of his spells the night before and was pretty confident in his ability to keep her protected, at least while she was at home.
"Knowing Ron he's already smelled it and is on his way now," he chuckled.
"I'd love some. But I should take care of business first, before I get distracted by food and forget why I'm here," he nodded, crossing his arms as he looked around the room. "I was thinking maybe a Caterwauling Charm to let you know if someone was approaching the flat, but it would just go off whenever anyone got close and that might get bothersome pretty fast if you're expecting company often..."