Your choice...
HTBT but I think I would have conceded the buck to the kid.
Never miss an opportunity to teach when in a 'teachable moment'.
Seeing generosity and compassion is an important lesson for a young person especially in 'our world' (the scope of hunting and hunters).
That youngster will forever remember this lesson. I'll bet his Father will carry this story to every camp, trip and excursion he goes to as well.