The Savvy Villainess's Exit Strategy

I was reincarnated in the game <The Devil's Companion>, which I enjoyed playing. And that too as a villain who dies while harassing the female lead! Moreover, the more you use magical power with a human magic stone, the more vitality you lose. Even if it’s time-limited?! What is life like...? are you okay. You can survive without using that much horsepower, right? Protect my mana (=life force) well and save up slush funds I'm escaping to a warm and peaceful southern country with my sister...! I thought so? “Take it, Lillian. It’s your doll.” My father threw the original male lead at my feet. And in the future, he will become the emperor of the psycho confinement king. Obsessed with the male lead...!