It’s hard to believe that this is a true story (the coincidence of you giving your last 17$ to the little kid, and the same night receiving the check from your friend), but even if it’s not true, it is still a nice story, and I completely agree with the point you’re trying to make.
I don’t know you, and as any famous person, there are good and bad things people can read about you.
Somehow, though, I believe that you’re mostly a good man. I admire what you’re doing for the poor, and I wish more people would do more (including me).
All the best.