The Girl with No Shadow (Chocolat #2) by Joanne Harris

The wind has always dictated Vianne Rocher's every move, buffeting her from the French village of Lansquenet-sous-Tannes to the crowded streets of Paris. Cloaked in a new identity, that of widow Yanne Charbonneau, she opens a chocolaterie on a small Montmartre street, determined to still the wind at last and keep her daughters, Anouk and baby Rosette, safe. But the weather vane soon turns, and Zozie de l'Alba blows into their lives.