I am so sorry you have this memory about the belated warning, my friend. But I wonder how a 10-year-old boy would have reacted to the warning and what understanding he would have had of it. And if he had understood, could he have told. Most boys find that they can't. The bottom line is that it was still all the predator's fault.
Nobody living can ever stop me
As I go walking my freedom highway.
Nobody living can make me turn back:
This land was made for you and me. (Woody Guthrie)