Miranda Popkey’s new novel, “Topics of Conversation,” owes its existence to the MFA program at Washington University in St. Louis. The California native was a student there when she wrote much of it. The novel takes its inspiration from what it’s like to be a young woman in this fraught time. How do we talk about sex and our desires? How do we make sense of our choices, and our lives? In this episode of St. Louis on the Air, Popkey joins host Sarah Fenske to discuss her novel, which was recently named one of January’s 20 “must-read books” by Entertainment Weekly.