The Book-Trapped Cannon Fodder's Comeback

Su Ruoji is thrilled to discover that after her death, she has been reborn in the body of a five-year-old daughter of a prestigious family. But less than two months later, she is horrified to realize she has transmigrated into a book, becoming a supporting female character who gets killed off at just seven years old... A strong female lead story. The heroine won't get married.