Normally I would assume the complete lack of anyone leaking the details of the three who beat her up would be Coulter's law. 3 on 1 school beatings with a focus on inflicting head trauma is certainly a cultural staple for certain demographics.

But given how based the actual authorities have been so far with wanting to change the Nex girl as the primary aggressor, and denying any link between her death and the fight. They may just be upholding the legal requirements to protect minor's identity out of a duty to the law instead of hiding an inconvenient truth. It'd also be promising if normal kids are finally learning to become part of the cautionary tale of "fuck around and find out".