
The dad is to be blamed for the sisters behaviour and actions. Hes the reason why the sister's resentment is so severe but the sister isn't stupid, she just is stubborn and refuses to change her mindset and thinks her way of thinking is right and that her sister's is wrong and blames her sister for everything when im reality she's pushing the blame that should be on her father, to her sister because she desperately wants to be recognised by her dad. She's accomplished so much but there's no point in having a high IQ with a low EQ in such a position and she's really naïve if she can't even build connections and strengthen them bc she sees them all as "naïve" bc they haven't swung a sword which is the most hypocritical thing there because she's the pnly naïve person there if she really thinks that being good at sword fighting alone will help her to become heir. Her jealousy got so bad that she attempted to murder her sister so i do think she needs a lot of karma but she is still young because she should be like mid teens so I think she can have a good character development and change for the better if the author allows for it bc it looks like the aithor wants her to be the main antagonist for a whiiiiiile.