16 years

When Aro's human sex toy ends up pregnant and he lets her live to give birth to two daughters. What will happen when one daughter Keller ends up having to live with the Cullens so that they wont be in harms way. Keller waits 16 years to be in her rightful place. What will happen when Keller leaves trying to follow the mystery dreams of places shes never been and people shes never meet all before her 16th birthday. What about her sister Sarah who curently lives in the Volturi castle with her father.Does Sarah get her true mate or does he already love someone else? What will happen when he dosnt even know of his feelings for her. Sarah could really use the help of her long lost sister. The thing is Sarah and Keller have to find their true mate before their 17th birthday or they wont be crowned as queen. It seems this might be harder then either of them thought.