The Ability Snatcher: Rosalie and Emmett's Daughter {A Alec Love Story}

(Okay I suck at these things, but I will give it a try)
One day everyone in the Cullen family besides Emmett when out hunting. Emmett stayed home to play on his Xbox, when his biological brother showed up with a baby in his hands. His brother had gotten a human pregnant and wanted no part in his daughter life. He gave his daughter to his brother, Emmett. Emmett noticed the baby girl looked like him and Rosalie. It was like they were her real parents. He named his new daughter, Zoey. The whole family accepted her into the family right away. They discovered she has the ability to snatch gifts, but the vampire’s got to keep their gifts while Zoey had them as well. When she got older she takes interest in the Volturi and they take interest in the new family member of the Cullen’s and come to meet her. It turns out she is the blood singer of one powerful Volturi guard. What will happen?