The Lost Cullen - Twilight
Renesmee has a twin. Her name...is Alicia. One night, the Cullens left a newborn size Alicia with a 7 year old size Renesmee (Renesmee grows incredibly fast due to her vampire DNA unlike Alicia who is completely human) while they went on a hunt. While Renesmee was watching her sister, she was attacked. The man that br...