Healing Space: The Spoiled Young Lady Is a Poison Expert

She was a calm, collected military doctor on the battlefield, saving lives and tending the wounded. But after transmigrating, she becomes a spoiled, incorrigible princess of the Meng kingdom, whose infatuation brought her country to ruin. To keep anyone from catching on, she keeps up the act. Meanwhile, with space at her disposal and medical skills in hand, she ruins the homewrecker who comes looking for trouble and kills the man who poisoned and abandoned her. She never expected the haughty, icy, ruthless prince to set his sights on her.