Curtis Sittenfeld: 'I don't think I would have written Rodham if Hillary had won the election'

In 'Rodham', the best-selling author of 'Prep', 'Eligible', and 'American Wife', imagines Hillary Rodham's life if she had never become a Clinton. Sittenfeld speaks to Clémence Michallon about bending reality, the intimacy of fiction, and how she didn't try to endear herself to her new subject