Who does Marguerite run into while she is walking in the woods Christmas Eve to sing Christmas carols on her own? What does he tell her? What does she give him?

Marguerite runs into an Indian while walking alone in the woods on Christmas Eve singing Christmas carols. The Indian tells Jean that he was once injured and cared for by French Canadians and therefore has learned some of her language. As a gift, Marguerite gives this Indian her uncle's button.