While I think it was wrong that nobody at the school offered her something, I agree with this. She had the "breakfast" sticker on her bag, so like someone else said... obviously the mom cares.
I don't think I've eaten breakfast in thirty years! I know my mom used to try anything and everything to get me to eat, but I would have none of it.
I don't know that the sticker indicates that the mom cares, At our school, they school itself places stickers on all sorts of things< I bet the school did it as a way of flagging the child, not the mother