Is Hal's sister a villain?

I don't think the teacher in the original "Hal and His White Cat Owner" is a bad person. Although he is a villain, he is also a poor man who can't help but hate. Wei Shi is a butterfly beauty in hell. Butterfly beauty seats are tortured or killed on earth, and there is no way out. In order to bring the butterfly bone beauty back to the underworld, the teacher burned it with ink and destroyed the whole world of mortals. Finally, I was shut out of the underworld, because I also have protoss blood. In the end, I sacrificed myself and let the butterfly bone beauty seat go home.