Daw, by "nipping in the bud", I wasn't putting any blame on either the puppy or the child, but whatever the cause, I'm sure everyone would agree if a puppy growls and bites a child the situation needs to be addressed and "nipped in the bud" very quickly. It might sound hard but we always adopted the one strike and you're out policy with the dogs when the children were very small (admittedly, we hadn't had them as puppies). We adored the dogs but our first duty was to the children. We never had any problems, thank heavens.
Just to clarify, I'm not suggesting for one moment, that I'd apply that this young puppy, she's still learning her place and its not her fault, but nontheless, a dog that bites + children is a no go.