Spirit of the Western Frontier: Meet Caroline Quiner, the little girl who would grow up to be Laura Ingalls Wilder's mother.Little House in Brookfield marks the launch of an on-going series about the adventures of Caroline Quiner, who would grow up to be Ma Ingalls in the Little House books. Written in the classic tradition of the Little House and the Rocky Ridge books, and based on diaries, letters, and other historical papers, these books offer a glimpse into America's adventurous past, as seen through the eyes of another girl from America's beloved frontier family.