The general's comeback

Okay, her story is a bit complicated...um, where should we start? Well, Rong Li Lian was a normal girl in the 21st century, or at least, was. And even though she was somewhat interested in some historical fiction , and transmigration novels, never had she ever, thought of being in one! Not in her wildest daydreams! One day she woke up in a novel as the male lead's younger sister who is doomed to die before the start of the novel! How come she isn't even part of the story? Only mentioned in a flash back? And why is the plot progressing differently from how she remembers? Is she still on the novel she remembers? Anyway, this story isn't even about her, so it should be fine if she acted out of script a little right?