The girl from Shadow Springs

"Everyone in Shadow Springs knows that no one survives crossing the Flats. But the threat of a frozen death has never deterred the steady stream of treasure hunters searching for a legendary prize hidden somewhere in the vast expanse of ice. Jorie thinks they're all fools, which makes scavenging their possessions easier. It's how she and her sister, Brenna, survive. Then Jorie scavenges off the wrong body. When the dead man's enemy believes Jorie...