He lifts a finger to boop her nose gently and will pat her on the head as well like a kid now that she seems a lot calmer. That face though needs some work and if he was in his tux he'd offer her his handkerchief. Unfortunately, he doesn't even have a napkin on himself.

Ask his brother or his niece and he's definitely #1 Brother/Uncle. It pays to know how to listen even when a certain spoiled niece is whining. "That's better."