The First Book by Xin Qing Si Cha

Originally, Cui Yantong wasn't from this world. Her name in her original world was also Cui Yantong.

One day, she read a book called Sweetly Doted-On Little Wife. The female lead's younger sister had the same name as her. This cannon-fodder character, Cui Yantong, was selfish, narrow-minded, and intensely jealous.

Her mother was also extremely biased. After deliberately ignoring the original Cui Yantong, the girl's mind gradually became twisted, and an accident left her disabled.

For some reason, the original Cui Yantong suddenly learned what would happen in the future. Knowing she would end up destitute and die in poverty and sickness, she refused to stay in this world any longer, and Cui Yantong took her place.

Even her memories came along with the package.