You need to go to several places before you begin to feel Ok with it. I like PetsMart and our local pet store, because dogs are allowed inside, and you get dog treats. Once I got to go into HomeBase. Probably don't need to say this, but don't go with them if you have to wait in a hot car. Kids Contact with kids should be supervised.
Kids do unexpected things.
Kids are NOT for herding. I still don't quite get this, and sometimes I have to stay inside when there are a lot of kids outside. Kids have more status than dogs. That might be hard to understand if the kid is acting like a puppy, and you are a grownup dog. They said they wanted to be there when she did it.