One Crow Alone (After the Snow) by S. D. Crockett
A new Ice Age is descending. . . .
Food is expensive. Fuel is rationed. People are hungry, cold, and desperate.
Living in an isolated Polish village with her grandmother, fifteen-year-old Magda Krol has no idea of the troubles sweeping across the planet. But when her village is evacuated without her, Magda must make her way alone across the frozen wilderness to Krakow, and then on to London, where she dreams of finding warmth and safety with her long-lost mother.
In One Crow Alone, the prequel to After the Snow, S. D. Crockett turns back the clock to follow practical Magda (Willo's stepmother) through a world of growing lawlessness, hunger, brutality, and fear.