we can make a difference for fighting children

“How do you intervene noncoercively when one child is attacking another?”

Meet the aggressor where she is, without resistance, as opposed to disapproving from above; see it from her PoV; what was this about?; what led up to this? How can we proceed positively from here?

Protect the victim

Protecting the victim should not involve intentionally punishing the aggressor, either physically or by even frowning at the aggressor.

Both coercion and “doing nothing” are mistakes

Children have to do what they themselves think is right, with no pressure whatsoever—that’s what non-coercion amounts to—but they also have a right to be told morality as best we see it.