Who is Ada Ware from One Thousand White Women and what is their importance?

Ada Ware joins the bride's group wearing black, as if she is in mourning. She is extremely depressed, and she possibly sees the brides program as a way out of her internal prison. Ada's husband, who killed another Cheyenne during a drunken brawl is banished. She stays with him on the periphery of the group throughout the story.