Willow Havens is ten years old and obsessed with the fear that her mother will die. Her mother, Polly, is a cantankerous, take-no-prisoners Southern woman who lives to chase varmints, drink margaritas, and antagonize the neighbors—and she sticks out like a sore thumb among the young modern mothers of their small conventional Texas town. She was in her late fifties when Willow was born, so Willow knows she’s here by accident, a late-life afterthought....