Everything's better when your dead{volturi kings}

Florence Swan a 17 year old girl with a special gift is Isabella swans half sister, a product of a one night stand Charlie had after Renee left him. Bella and Florence were best friends and went everywhere together when Bella visited.forks even when Bella stopped visiting they still called everyday and Florence was ecstatic once she heard Bella was coming back to forks but everything goes wrong when Bella gets curious and drags Florence into finding out the cullens are vampires and once Bella started dating Edward Cullen she and Florence grew apart. Now almost a year later Florence gets dragged to Italy to help save Edward, what happens when it's revealed that Florence it the mate to the ruthless vampire kings.