What's Left of My World: A Story of a Family's Survival
From the back cover:

Lauren Russell often wondered why her father had been so adamant about teaching her skills that most other fathers wouldn’t even consider teaching their daughters. Ever since she was little, she had been taught how to live and survive outdoors, and how to use firearms to protect herself and those around her. Some of the training had been a bit extreme. Or had it been?
Many of her questions were answered the day the world as she knew it ended. Now, the skills she had been taught serve an essential purpose. They keep her and those she cares about alive.
Even in the sparsely-populated mountains of West Virginia, where she and her family have been forced to relocate for their safety after the collapse, peril lurks around every corner. Normal life has taken on a whole new meaning for Lauren, her family, and the community they have become a part of. In this different world, the new status quo is self-preservation. There is no more middle ground. People either live, or they die.
Lauren’s father didn’t make it home on the day the world changed forever, and she misses him more than anything. Now, in What’s Left of My World, she and her family must learn to endure life’s horrors—without him.