Elena's and Bella's sister (a Vampire Diaries and Twilight fan-fic)

Elena and Bella each had a lot of problems on their hands. The Volturi found out about Renesmee and decided to eliminate the Cullens. Meanwhile, Elena, living on the other side of Fell's Church, is battling with Shinichi and Misao, the evil and manipulative kitsune twins that had gotten their malach to possess Damon, along with most of the children under the age of 18, and get them to commit evil. But what happens when they find out they were sisters and triplets with a half witch half angel with a tragic previous life and are sucked into a world of malice, an otherworldly world where ghosts, demons, zombies and other creatures that even they know nothing about? This is a story of how Rhyzlirae, their unknown triplet sister came into their lives and made a huge difference in their already hectic lifestyles. Would they ever live through the blows that they are dealt? Would one of them sacrifice their own life to preserve Fell's Church, possibly the entire realm? Read on...