Hpi'm Saving, I'm Saving

[Sorry, it will probably take a long time to continue writing] Few people know that Harry has a twin sister. After all, when "The Boy Who Lived" became widely known, she was lying fast asleep in Snape's dark little house. After the disaster, Snape took the baby girl away and raised her alone. She knew the whole plot and she didn't want anyone to die. Sirius? Help, Dumbledore? Help, Lupin? Help, Dobby? Help, Snape? Save it. But she is not smart, and all her knowledge and wisdom comes from Rowling's books. What would she do if the plot went beyond the pages of the book? Can she save those she loves? It can probably guarantee four to six updates a week. The author is flooded with thoughts now (just kidding), but may slow down later because the author has not yet conceived the content after the third grade. Purpose: I want to write a story where no one dies