Book excerpt: When the Stonor family joins the last wagon train to Oregon in the 1840s, little do they realize that disaster awaits. Suddenly 17-year-old Maryla Stonor is left to fend for herself in the mountains of Wyoming, just before the onset of winter. And even if she does survive the endless blizzards and numbing cold, when spring finally arrives, how will she find her way back to civilization? A gripping tale of survival.