Reborn as the Cannon-Fodder Maid of a Villainess

She is a top-level national agent and the sole heir to a family of renowned physicians. Then one day, she transmigrates... Oh, that's the heroine. She's the cannon-fodder maid who provokes the heroine in the first chapter. In that case, never mind. Qin Ju rubs the bump the heroine just knocked onto her head, while desperately holding back her own young lady, the villainess, who's sharpening her knife and ready to settle the score. Seriously, if we can't afford to provoke them, can't we just stay out of their way? And whoever that madam over there is, put down the poison! You won't kill anyone that way! What? That battle-scarred Prince of Death wants to marry our young lady? Don't think I don't know you're the male lead who brings death to his wives! And having your personal guard bat his eyes at me won't work either.