After Being Turned into Cannon Fodder, I Can Hear the Thoughts of the Whole House

Su Qingyuan, the eldest daughter of the Yongning Marquis Mansion, was originally a cowardly idiot. She was teased by her stepmother and plotted by her concubine since she was a child. She fell in love with the Crown Prince and even ruined her reputation for the sake of the prince. She eventually became the laughing stock of the entire capital. She was killed by her stepmother and concubine, making her the worst cannon fodder legitimate daughter in the book.