the girls like this had been when I was eighteen. She was naïve, but she knew it; she told jokes on herself with such zest and mischief that—in spite of the context, and my creeping worry that this level of innocence would get her into trouble one day, and Jessica sitting there watching invisible booglies like a cat—my laughter was real.
"creeping" because, despite himself, the detective is getting a little too attached to this teenager.
