AU. When Lily died, Snape removed his heart and replaced it with a steel trap. But rescuing her daughter from the Dursleys in the summer of '92 is the first step on a long road to discovering this is less true than he'd thought. A girl!Harry story, starting in Chamber of Secrets and continuing through Deathly Hallows. Future Snape/Harriet.
Harry Potter - Rated: M - English - Chapters: 86 - Words: 555,963 - Reviews: 2219 - Favs: 1,051 - Follows: 1,182 - Updated: 3/2 - Published: 10/16/2012 - Harry P., Severus S.