We can only do our best, Eliza, and it sounds like you did yours. I have done similar in the past and was amazed that the happiest reaction I got was from a young man who I gave a pair of gloves to! It is harsh but, sadly, we can do no more than help where we can and badger the powers that be to give the homeless a better deal. It would drive you mad if you dwelt on it to long.

I can't find the actual story but here is the description of a philosophical piece by Ursula Le Guin. The ones who walk away from omelas.

Cheers

DtG