Readings at the New Glasgow, N.S., public library are usually tame affairs, but then it is not every day an author appears who has written that the local population acts like it is stunned by chloroform. When Dawn Rae Downton read from her new memoir, Diamond, she was met by about 10 hecklers who did not appreciate her unvarnished portrayal of Pictou County, their rural corner of northern Nova Scotia. Ms. Downton never dreamed her book, which is essentially the story of 100 days spent caring for a dying friend, would make her Nova Scotia's own Salman Rushdie. But after...