Fighting To Survive: As The World Dies by Rhiannon Frater

Katie and Jenni have found new lives with the survivors of their makeshift fort, but danger still lurks. Nothing is easy in the new world where the dead walk and every day is a struggle to keep safe.As the elements, bandits, and the zombie horde threaten their safe haven, Jenni and Katie join the other survivors in fighting to survive as the world dies.