Are you a human being? The reason I ask is that you seem to value dogs over children.
I pity the animal that has a confrontation with a human if the human provoked it. Animals have no voice, and people so often are cruel liars. Children are not angels, and anyone who thinks so is a fool. And in this case (though not most others) I just have a feeling that little darling was kicking a tied-up dog and got what she deserved. But mostly I just think big dogs and small children should never be together unsupervised.