I Wrote the Novel, So How Could I Be the Cannon Fodder?

After transmigrating, Shen Zhimo found herself and her best friend inside the novel she'd written! Her best friend had become the female lead, while she had become a cannon-fodder character who died right from the start?

What kind of setup was this?

Shen Zhimo thought that, in the original story, this cannon-fodder character had quite the background. As a child, she had been abandoned by a wealthy family and later adopted by the Shen family. Her five older brothers were all powerful figures, and they doted on her. (That was the female lead's family, the identity her best friend had transmigrated into.) Meanwhile, the female antagonist Qianqian killed her at the beginning of the novel, then took her place and married the Crown Prince later on.

After transmigrating, Shen Zhimo looked at the female antagonist standing before her and thought, Hmph, I created you. How could you possibly kill me? You'd better keep your tail between your legs and behave yourself, and I might spare your life.