The Story Of Hope Herondale - Semi9611

Everyone thought that Hope Herondale-Lightwood, Jace's twin is dead. But what if she's not. What if one day a girl comes to the New York Institute and says she's the lost Herondale.
Hope was raised, from the first moment on Earth, by the Lightwoods. She always considered Maryse and Robert as parents and Alec and Izzie as siblings. But she always knew the true about her real family. Who she really is that she's Herondale and she had a brother, twin, but he died. But no one ever told her how.
After 10 years she's back and she has to convince everyone that it's really her, especially her older brother Alec.