He idly tapped the harmonica on his other hand as he listened to her. To judge by that rather confused look on his face, most of that flew right over his head. He did try to communicate something at one point, though. The harmonica was slid away into its pocket again, and he put his hands on his chest, shifted one to make an "X" mark, then walked his fingers away and to the side with a flourish at the end.

Promise to let him go and he'll never come back, how does that sound?