Again, the village leader/manager is the villain here. Reminder that all these poor kids and adolescents who we feel sympathetic for (and the crazy social media lady) are all trained or in-training killers who just as easily could have been killed by someone else. And they were trained by the village into becoming such people.
Except the classmate's friend. She literally did nothing wrong at any point, just had someone be too emotional and full of money who knew of her existence and put a fault of their own (not even their own child necessarily, since it is them who are taking the step to hire a killer) onto her.