In Her One Regret by Donna Freitas, a woman new to motherhood disappears from a parking lot, her baby left behind. Her best friend, Michelle, is convinced that Lucy was taken against her will and she goes to work making and posting fliers and organizing a reward. Michelle also makes the mistake of divulging Lucy's secret - that she regretted becoming a mother. 

Lucy transforms from victim to pariah. Julia, among the many mothers closely following the case, instantly empathizes with Lucy, about s...