Draper Estates Trilogy Series by Kyoko Church

Wealthy businessman and owner of Draper Estates, Ewan Draper needs a wife to give him the respectability demanded by polite Boston society. He’s drawn to the newest of his mill girls, the wild and passionate Lilliane, and arranges a hasty marriage. But when Lilly’s enjoyment of sex is diagnosed as nymphomania, an affliction that, it is claimed, will send her mad if left untreated, Ewan’s good friend, Dr Phillip Samms, devises a radical cure. A cure that only leaves Lilly wanting more…

Lillianne Draper has fled the clutches of her drunken husband, Ewan, and returned to the safety of her family farm. But her tormentor, Dr Phillip Samms, needs Lillianne to endorse his machine for curing female hysteria - more than that, he needs to see her strapped in his restraining chair, helpless and at his mercy once more. Can Lillianne free herself for once and for all, and does a lasting love wait for her somewhere beyond the walls of Draper Estate?