Lauren Groff writes to alleviate her angst about aspects of life she finds hard to confront. Climatic disaster, misogyny, spousal death, flawed utopias and pandemics have all fuelled the plots of books as disparate as Fates and Furies, her 2015 contemporary two-hander about marital verisimilitude, and Matrix, which features a 12th-century feminist abbess based on the little-known poet Marie de France.