Another thing I would like to get clarification on is where was the mother standing when she threw the ball and how did it end up going so far? I would think you would throw the ball from one end of the beach to the other. If thats the case how did the ball end up over that wall? How high is the wall? What kind of ball was used? If it was a tennis ball that the dog had been using it would not have as much bounce as a new tennis ball. Maybe it was other type of rubber ball? Or was she throwing the ball with the kids and it was one of those basketball sized balls they sell in grocery stores? Did the wind take the ball?
I am not accusing anyone of anything. Just trying to understand the facts.
Speaking from personal experience, those basketball sized balls they sell in grocery stores last approximately 2.3 seconds with a dog. One fetch and they pop and suddenly you have a rubber bowl, colorful yarmulke or whatever else you can pretend the remnants are.