Because of Jon's wish, no one could feel emotional pain. So it just built up and up, until about ten months later, when the sheer force of sorrow would overpower the wish, causing it to pour onto the would like a dam bursting.
But let's not dwell on that future event just yet.
Karyn walked back into the room, after Jon refused to come out. She found Jon on the floor, dead. But since she couldn't feel emotional pain, she smiled and said "Well, at least he had a good life." Then she skipped out of his room and went to school.
