Returning to London, she served as assistant secretary of the Church Adoption Society from 1954 through 1960, the year she became a full-time writer.
In addition to writing, she served as chair of the Durban adoption committee of the Indian Child Welfare Society from 1963 through 1974.
[2] Drummond "is a skillful writer who handles prose well", says Carol Simpson Stern in St. James Guide to Crime and Mystery.
Less pleasing to Stern in some of Drummond's work are what she regards as thinly developed characters, stock situations, and a tendency to moralize.
The reviewer likes Drummond's "crisp dialogue" and her eye for accurate historic detail and credits her with producing a "top-drawer romance, wholly engaging and perfectly entertaining.