Her 19 novels and several shorter stories were issued by multiple publishers in Britain, Australia, Canada and the United States between 1879 and 1915.
For more than a decade after Evelyn Whitaker's death, her two most popular titles, Miss Toosey's Mission and Laddie, continued to be reissued as gift books.
Evelyn Whitaker's novels show intimate knowledge of life in a vicarage and in a doctor's household.
She makes frequent use of the Victorian language of flowers, relates the blessings and burdens of children rich and poor, and knows well the streets of London and the rustic beauty of the countryside.
Gay provides details of home nursing care, quarantines and a visit to the London Fever Hospital at Homerton.
Although the books were sometimes attributed to her, Evelyn Whitaker was not the author of Honor Bright, or the four leaved shamrock or of Gilly Flower (1889).