My sister is a nurse in a pediatric hospital. They had a nine-year-old kid come into the clinic on Christmas Eve with complications of type I diabetes. They discovered cigarette burns all over his torso and had to get the police and child services involved.
It's a really good hospital and they have a lot of wealthy benefactors so they can do a lot for kids like this. She asked him what he would want from Santa through their Santa program. "Don't worry about me," he said. "Give it to a kid who needs it."
I'm glad your son got to go to the game. I don't begrudge him that. But the ability of legit charities to reliably raise funds depends on good will and trust. Every time someone like you does something like this, that gets harder.