When the world ends, can the group survive? Who will die?

Isabella is a demigod/vampire. Her father came to her and told her to find protect 7 unknown demigods in Forks, Washington. Should have been easy but Bella's life is difficult and her problems are always follow her. How is she suppose to keep them safe and fight her battles? To make matter even more exhausting, she seems to be falling for one of them.