Yeah, I guess I still don't know all the places where she could be hiding.

[ He rubs the back of his head, playing dumb for now. He wipes some of the dirt from his knee, which he put there himself of course, and smiles at Satoko sincerely. ]

But Rika-chan really means a lot to everyone, so of course they're looking their hardest. I'm sure we'll find her soon. She's really special to you, isn't she, Satoko?

[ Is he saying that so that Rika can hear him? Maybe. And he might be trying to get Satoko to say something nice about Rika, too. ]