An Inheritance of Ashes — Leah Bobet

The strange war down south -- with its rumors of gods and monsters -- is over. And while sixteen-year-old Hallie and her sister wait to see who will return from the distant battlefield, they struggle to maintain their family farm. 
 
When Hallie hires a veteran to help them, the war comes home in ways no one could have imagined, and soon Hallie is taking dangerous risks -- and keeping desperate secrets. But even as she slowly learns more about the war and the men who fought it, ugly truths about Hallie's own family are emerging. And while monsters and armies are converging on the small farm, the greatest threat to her home may be Hallie herself.