“I did not put anything into the book that had not happened [to women] at some time or in some place in history or was not happening when I was writing the book. So it was all reality-based and one reason I did that is I did not want to hear ‘You’ve got a warped, twisted imagination and nobody would ever do these things.’ So I just put in things people had done. And now they are doing more of them.”
https://www.youtube.com/watch?v=S0z8Jw17CV0