This story details several months in the life of a thirteen-year-old with incurable kidney disease and of her extended family--the policeman father who has cared for her since her mother ran off, the mother who reappears in time to learn she is the most likely donor, two sets of grandparents and several of the father's close friends. Two women in the father's life find their romantic attachments to him complicated by his role as his daughter's caretaker.
As Mary Grace's health deteriorates, her maturing accelerates. Each of the principal characters has to come to terms not only with impending loss, but with how this crisis reconfigures old patterns of family conflict and dependency. The story continues after her death as focus shifts to the father's grief, mourning, and new empathy with victims of accident and loss.