Of the millions and millions of kids from the UK that have gone on holiday in the decades between Ben Needham and Madeleine, we thankfully have few tragic mysteries. Accidents, yes hundreds, maybe thousands most likely, traffic accidents, drownings, falls, electrocutions, food poisoning, severe...
You didn't do anything wrong, and it wasn't for the grace of God, it was thankfully that in almost every single case, at every shopping mall, waterpark, fair, park around the world, a lost child will be cared for until their parent is found. Your fear at the time was natural, but irrational...