This is why I hate DU.
Suppose the story is true, to the letter. Then the mother, far from being a liberal super-hero, is devoid of empathy and wants nothing more than to ensure that a comeuppance is delivered to a "bully," in this case another little boy. At the risk of bieng branded a liberal pinko, instances like this are not opportunities for adults to wave an indignant finger in a child's face. Instead, this is an opportunity for everyone to learn. The appropriate response, if all of this is true, is to isolate each of the children and explain to the victim that what happened was absolutely incorrect, and the other kid is being dealt with decisively. The bully needs to be given a polite but firm lesson in empathy(not sympathy, but empathy). The little girl just needs to have the situation explained in detail, so that she knows that adults understand what happened and are acting in kind.
Lurking DUmmies, read and nota bene: when a child is bullied, the first and most important job is for responsible adults to signal that they observed an injustice and are addressing that injustice with without emotion or partiality. A child in the care of adults, who relies on those adults for nurturing, only needs to know that their feelings and needs will be taken seriously. A child that acts like a bully is also in need of appropriate (i.e., nurturing) feedback: what you did is not acceptable behavior and will not be tolerated. Either you will treat others with respect, or you will not be allowed to be among them. Act appropriately, with respect for others, and we will move past this.
Of course, the point of this story is to draw the typical ire and indignation of a DUmmy, which would create the following result: an overly coddled victim, who will either learn to fear those around him or will expect all indignities to be resolved in his favor, and an overly punished bully, who suffers the humiliation of having some ****head liberal's finger in his face while they scream words like "Bushitler" and "Freeper."
Yes, I've seen bullying at elementary schools, and it almost never gets handled the right way.