Honestly not just her, but some villainesses have reasoning of being how they are. Not ganna lie, I would be bitter if I was mistreated by my family too. And then those situations where the FL takes the villainess fiance, wtf man I'd be mad too, ESPECIALLY if I were to be humiliated in front of an audience.
I'm glad to have stories with the MC not being the center of attention because we get to see the other side of stories.
So glad this is a manhwa now, I enjoyed the novel.