Christian fundamentalism is a competitive sport, with adherents often trying to outdo each other by escalating their extremism. Author Cait West is a survivor of this toxic dynamic, having grown up in a church and family seemingly intent on generating ever more stringent rules governing people’s sexuality, education, and life choices — especially those of girls and women. In her new book, “Rift: A Memoir of Breaking Away from Christian Patriarchy,” West details a childhood under a father who spent years trying to tighten his grip on his family, denying his children ordinary life experiences like dating, education, or even the barest amount of autonomy.  West spoke to Salon about her experiences as a “stay-at-home daughter,” explained why fundamentalism lures so many people in, and what, exactly the Christian right finds so alluring about Jane Austen novels.  This interview was edited for length and clarity.  Many of our readers are quite familiar with the Christian right, their strict gender roles, and even their abstinence-only teachings. But what you describe in your book is next level. You …