Barbara Winfrey can pinpoint exactly when her divorce turned more ugly than she had ever thought possible. It was Friday 2 November 2012, her sixty-fourth birthday, and the day she received the telephone call that turned the implosion of her marriage into an 18-month legal battle with one of the most powerful celebrities on the planet – her stepdaughter, Oprah Winfrey. Barbara listened as Oprah delivered her thunderous ultimatum: ‘You say I never talk to you? I want to talk to you now. You have until Monday to get out of MY house.’ Earlier this month Barbara was finally served...