Rielle Hunter has gone quiet after less than hoped-for sales of her memoir — she’s scheduled no additional tour dates to promote her tell-all about her relationship with John Edwards, “What Really Happened.” After a serious media blitz, which included interviews with ABC’s Chris Cuomo and appearances on “The View” and “Piers Morgan Tonight,” Hunter, the mother of Edwards’ daughter, Quinn, has sold 6,000 copies of her story, Bookscan told Page Six — enough to crack the New York Times best-seller list but “not big enough to make the major New York houses sorry” for not choosing it, Publishers Weekly said. A rep for Hunter told us: “Rielle’s book tour has not been canceled. She completed her scheduled media appearances, and there are still requests that she’s considering.” But the rep added that no other tour appearances are currently planned. Hunter reportedly got a small advance from boutique publisher BenBella Books because larger publishers feared women would not buy it.