Cat is the most intense of the Kettle family triplets. A tall 34-year-old blond, she is Lyn’s identical twin. Cat has a successful career in marketing with a well-known chocolate company. She is fiercely competitive and plans on moving up the corporate ladder. At the beginning of the story, she is unsuccessfully trying to become pregnant and envies Lyn for having had a baby so effortlessly. When Cat’s husband cheats on her, she reacts with violent outrage. To compound the problem, Cat has a miscarriage and feels her life spiraling downward. For much of the story, she is consumed with jealousy and resentment. He volatile temper causes her to act on these negative impulses and results in the infamous fondue fork stabbing incident. By the end of the novel, Cat gets her life back on track and begins to look forward instead of back. 

Lyn shares Cat’s features but not her impulsiveness. In contrast, Lyn is highly organized and very tightly wound. She has created a successful brunch catering business and is raising a two-year-old daughter as well as a teenager from her husband’s previous marriage. Lyn is heavily invested in self-improvement and tries to follow in the footsteps of highly successful people.