Before 7-year-old Simon Caquelin died, his family hugged him, kissed him and tucked him into bed. They sang together and said a bedtime prayer. They said goodnight. Then he was gone. A sledding accident a week before had left the 7-year-old in critical condition. Simon had been in the pediatric intensive care unit at Gillette Children’s hospital in St. Paul trying to recover. The St. Paul boy died Monday morning.