"Diana O'Toole is perfectly on track. She will be married by thirty, done having kids by thirty-five, and move out to the New York City suburbs, all while climbing the professional ladder in the cutthroat art auction world. She's an associate specialist at Sotheby's now, but her boss has hinted at a promotion if she can close a deal with a high-profile client. She's not engaged just yet, but she knows her boyfriend, Finn, a surgical resident, is about...