There is such an interesting fact about Jianghu. For example, Li Mochou and Xie Xun. They were also betrayed, Xie Xun's whole family died, and Li Mochou lost her innocence and defected from the school. Both of them suffered this catastrophe and became evil men who killed without blinking an eye. But Xie Xun died a good death, but Li Mochou did not. The key point is whether he/she is the protagonist's friend.
Su Ruonan's whole family died. She did not take the anti-social path. She just wanted to avenge her family, even if she was the enemy of the protagonist.