Blizzard: Colorado, 1886 by Karen A Bale
Hadyn Sinclair hates everything about his aunt and uncle's primitive Rocky Mountain ranch, and his cousin Maggie hates the thought of having her rich, spoiled cousin visting for four long months. when Maggie's father is injured and she and Hadyn are left alone, they argue, and Hadyn sets off on foot for the train station miles away. The next day Maggie learns that Hadyn never made it to town, and she must search for him in a raging blizzard, But even if she can find him, will they be able to survive freezing nights, vicious winds, and the constant threat of snowslides?