The Cannon Fodder Princess Dressed as a Yandere Villain

As the sole heir of a top medical family in the 33rd century, Su Qiongyue traveled back in time to a book she wrote, and to a meek woman from a poor family in a little-known border country. What, she is illiterate? Sorry, she wrote the most popular book in the city! What, she is submissive? Sorry, my sister has a set of heirloom acupuncture to teach you how to be a good person! But, hey, this big villain, why are you looking at me with such sinister eyes? Brother, don't kill me!