The Scheming Imperial Preceptor Dotes Only on the Eldest Princess

(Revenge after being reborn + satisfying comeuppance + devoted love between two strong leads) In her previous life, she was a regent princess with power over the entire court, yet the man she loved drove a sword through her chest. Her vicious cousin ruined her face and blinded her. Her younger cousin, whom she had personally helped rise to power, ordered a volley of arrows to pierce her through, and she died in bitter anguish. Reborn, she swore to repay each person in kind. Not one person who had harmed her would get away with it! She planned every step, played the fool while hiding her true strength, and tore apart scheming sweethearts as she crushed her enemies. Her scumbag ex wanted to run? Then she would break his wings, make him kneel as her slave, and torment both body and soul. Her vicious cousin wanted to scheme against her? Then she would ruin her reputation and send her off to marry into the barbarian lands. Her younger cousin coveted the throne? Then she would give him the chance to rebel, frame him for colluding with the enemy and betraying his country, and have him executed by slicing... But wait... Wasn't the State Preceptor supposed to have no interest in women? So why did he keep pinning her against walls and pouncing on her? To everyone else, he was an aloof flower on a high peak. With her, he turned into a scheming, possessive wolfdog. This is ridiculous!