Author's Note: This story explores the theorized sister from the canonical books (Often found in The Great Game) set in the television series. Mycroft's comment in the last episode of series three (quoted below) helped to inspire this particular formation of her character. I hope you enjoy! Please leave comments!
"Don't be absurd. I'm not given to outbursts of brotherly compassion. You know what happened to the other one," Mycroft said, staring out the window. Every muscle in his body was tensed, every atom of his being abhorring the words he had just spoken. He didn't know if he was right to suggest, but if it would save Sherlock, at least in one way, he had to try. For her sake, he had to try.