Who is Martha Atwood from One Thousand White Women and what is their importance?

Martha is employed at the Lunatic Asylum in Chicago. Believing that May has been unjustly incarcerated, Martha helps her escape. Although Martha knows that she will both lose her job and face prosecution when the authorities discoverer the forgery..... her sense of morality supercedes her fears. Martha eventually marries an Indian man named Mr. Tangle Hair. Martha's Cheyenne name is "Falls Down Woman."