It was a kid... chill the fuck out? Use it as a teaching experience for your dog and the child, "do not touch her" lmao youre going to give your dog a reason to think the childs behaviour was aggressive by removing it from the situation its now going to see a childs quick love (which most children like to be close to animals when they pet them and most arent exactly slow they are children and they are impulsive. Just like puppies. Use the kid as a learning tool.. and puppies jump and play and scare eachother lots, (they learn eachothers boundaries through this kind of thing). Not to mention why would you tell someone a puppy dosnt bite teething and mouthing is natural they nip and use there mouths to learn, and why would you mention ANYTHING about groups if youre issue had completly absolutely nothing to do with big groups. Maybe next time reconsider and dont get a puppy if you cant deal with how to teach them to deal wifh children. Children unfamilliar in this sort of situation will almost ALL act in this manner. Youre dog being afraid is okay you should have got down on youre knees and pet her and told her its okay given her a treat when her tail wagged and told her good girl for behaving in a positive manner in a stressful situation. Goodbye.