It's nice to see that some of that spirit still exists somewhere in the entertainment industry.
A great many years ago, in our early teens, my brother and I dated twin sisters. The sister my brother dated was diagnosed with a rare and particularly virulent form of cancer (the name of which escapes me at the moment). She was a huge fan of the Kingston Trio (and we're talking about the era when they were at their peak of popularity). The Trio was coming to our city to play a concert and my brother's GF wanted desperately to see them -- but she was in the hospital, dying of cancer, just like the little girl in the article above.
Someone got word to the concert promoter, who got word to the Trio's manager, who got word to the Trio. Nobody ever said anything, but early in the afternoon of the concert date these three guys with guitar cases showed up at the hospital and asked if they could visit "Sally." When asked if they were family, they said something like, "Well, we're more like friends of the family."
They were allowed up to her floor. Once the staff realized who they were and what was happening, they rolled all the kids in the cancer ward into the solarium and the Trio gave them a concert. And then left. By a back door. At the time they were possibly THE most popular musical act in the country, yet they just showed up, played for the kids, and left. No entourage, no press secretary, no photographers, no security detail. Just three guys with crew cuts and guitars.