The Legitimate Daughter of a General: the Ninth Prince Wants to Be His Son-In-Law

(Double life + 1V1 + Sweet pet + Machiavellian strategy + Don't bother with logic) In her previous life, in order to repay the kindness of the third prince for saving her life, she teamed up with the devil and killed her whole family. She herself was still alive. It was he who saved her and he avenged her! In her next life, she must take revenge with her own hands, protect her family, and find him...