I'm not sure of the specific details of this particular kidnapping in the Grand Canyon. However, generally in such cases, there could be various motives like ransom, or some personal vendetta. Maybe the kidnapper was someone who knew the victim and saw the isolated location of the Grand Canyon as a good place to carry out the crime.
Without detailed knowledge of this true - story kidnapping in the Grand Canyon, we can only speculate. The victim could have been a family member of someone who had a feud with the kidnapper. Or the victim might have been a solo adventurer who was easy to target in the relatively unpopulated areas of the canyon. The kidnapper could have been a local criminal who knew the area well and thought they could get away with the crime in such a large and hard - to - patrol area like the Grand Canyon.
Well, without more details about this 'kidnapping in the Grand Canyon' real story, it's difficult to give a comprehensive account. However, generally, kidnappings in such a location might be related to people looking for ransom. Tourists or locals who are alone and unprepared could be easy targets. Maybe the kidnappers plan to take their victims to some secluded spots within the Grand Canyon where it's hard for the authorities to find them quickly.
The 'Brighty of the Grand Canyon' is based on a true story about a wild burro named Brighty. He was a beloved character in the Grand Canyon area. He roamed freely and became sort of a symbol of the wild and untamed nature of the region.
The main character is obviously Brighty, the burro. There were also likely some miners and park rangers who were part of the story as they interacted with Brighty in the Grand Canyon.
One possible event could be that the kidnapper stalked the victim before making the move. Maybe the victim was alone at a popular but less crowded spot in the Grand Canyon.