The next time the two are supposed to meet, the violinist didn’t show up; then it’s later revealed that the violinist committed suicide due to the pressure and guilt of her music’s effects towards her audience. The painter goes to severe grief and suffers from loss, since he has based his whole painting career on the violinist music, he can’t paint anymore, and he suffers from it. He doesn’t have the inspiration to paint, but not painting kills him internally too.
The story might end with the painter drawing his beloved violinist as his last work, but because he wasn’t capable of creating art, he stops fighting to live and let the cancer take over his body.