Horrified

I was out with my cats when a girl about preteen age (10-12) comes out with her puppy trotting along. She drops the leash handle (retractable kind) and the puppy picks up the leash and runs away. Amusing. She grabs it back and the puppy continues running away. The girl jerks the leash and the puppy slides across the sidewalk with a yelp. Assumed it was accidental until she jerked it again causing the puppy to somersault and dragged an extra distance with another yelp. And she jerks it again causing the puppy to somersault with yet another cry from the puppy. And another drag across the sidewalk with a whimper. Then she lets the puppy go a distance, stops it with the retractable button stopper, lets it go and stops it, and lets it go and stops it. I was horrified with my cats sitting at my feet watching this too (they are very wary of any dog appearance). The girl sees me and sits on the sidewalk inspecting the puppy's fur and petting it on her lap. I'm sure my mouth was hanging open from the shock. She takes the puppy inside with it trotting along on the leash. What does one say to a kid yanking a leash incredibly hard that the animal somersaults and yelps? I gave her the beneifit of the doubt that it was her first puppy and didn't know any better. Post later. Bye!