Cathy Lamb, the acclaimed author of "Julia's Chocolates" and "The Last Time I Was Me, " delivers her most heartwarming novel to date as three sisters reunite during a family crisis. Ever since the Bommarito sisters were little girls, their mother, River, has written them a letter on pink paper when she has something especially important to impart. And this time, the message is urgent and impossible to ignore--River requires open-heart surgery, and...