There is more than one author with this name
Dorothy Emily Stevenson was a best-selling Scottish author. She published more than 40 romantic novels over a period of more than 40 years. Her father was a cousin of Robert Louis Stevenson.
D.E. Stevenson had an enormously successful writing career: between 1923 and 1970, four million copies of her books were sold in Britain and three million in the States. Like E.F. Benson, Ann Bridge, O. Douglas or Dorothy L. Sayers (to name but a few) her books are funny, intensely readable, engaging and dependable.