It actually takes both sides of Tianhuo's ancestry to make her stop the bullying. Honoured Father showed her empathy, but it's Honoured Mother's anger that drives her to action.
Tianhuo's unnamed victim forgiving her after the former's Heel Realization. That takes a lot of heart note especially because the story makes it clear she didn't have to do it, morally speaking. Even better, it's through this that the victimized longma gets her flames!