Butterfly by Patricia Polacco paperback
Since the Tall Boots—the Nazis—have marched into Monique's small French village, terrorizing it, nothing surprises her. Until the night Monique encounters "the little ghost" sitting at the end of her bed. When she turns out to be—not a ghost at all—but a young girl named Sevrine, who has been hiding from the Nazis in Monique's own basement, how could Monique not be surprised! Playing upstairs after dark, the two become friends until, in a terrifying moment, they are discovered, sending both of their families into a nighttime flight. In the tradition of Pink and Say, Patricia Polacco once again dips into her own family's history to reveal her Aunt Monique's true story of friendship from the French Resistance.