Kevin helped her back into the house from the window ledge, laughing. He hugged her back, of course (he liked hugs - he'd just been talking all about them earlier that day, with Dean!), and all of his fear was suddenly gone. Su wasn't a threat, Su was his friend. Why she was breaking into their house, he didn't yet know, but he was sure she'd be willing to offer an explanation.
"No, we didn't break in together," he said, laughing. "I have a key, because I'm house-sitting while the people who live here are on vacation. So if you grabbed anything, please put it back, or you'll get me in trouble."
He grinned at her. "And Dean's here! Did you ever meet Dean? He was in Gryffindor! Hey, Dean!" He turned around, expecting that Dean had already heard the ruckus and followed him into the room, but added the shout for him just in case. "Dean, meet Su!"