Trouble at Fort Lapointe (American Girl History Mysteries)

Suzette Choudoir has spent each of her twelve summers at La Pointe Island on Lake Superior, where Ojibwe people camp by the French fur-trade fort. It is 1732 and if her papa wins the trappers' competition, the prize will let him stay with his Ojibwe family year-round instead of wintering in far-off Montréal with the other French voyageurs. But a troublemaker sabotages the competition, and Papa. Only someone who's both Ojibwe and French can figure out what's going on -- someone like Suzette.