Kim Kincaid can’t catch a break. She has a thankless job at a law office, a nasty co-worker, and a boyfriend allergic to genuine commitment. Meanwhile, her older sister, Dena, skates through life with a perfect husband, a perfect job, even a perfect daughter. Kim grits her teeth through their every phone call, counting the minutes until she can disappear into a drink or TV (preferably both). She doesn’t recall agreeing to babysit her niece. She only remembers Dena bragging about yet&n