Fan Casting

While at a shopping trip, Alice Hendrix witnesses the end of the world. She watches as the world as she knows it disappears being over run by a sort of zombie vampire creature. After losing everyone she loves, Alice is desperate to find some sort of solution. Will a family secret not only provide a method to kill the creatures but also a possibility that these creatures and humans can coexist? With the main point of view being Alice but branching out later to a couple story lines. There is a love triangle/square. This was a series of dreams I had that I'm working through.