NA erotica "based on a true story". Yet it sounds run-of-the-mill student-teacher relationship. So what does the author have to gain from stating her novel is "based on a true story"? Is the work not interesting enough to grab readers without the gimmick? And whose "true story"? Did the real people involved give the author permission to co-opt their life for her monetary gain?
Mind you, the author has a history of douchebaggery towards readers and reviewers who don't praise her and her work, so... *shrugs*