Reputation
Yonge's work was widely read and respected in the 19th century. Among her admirers were Lewis Carroll, George Eliot, William Ewart Gladstone, Charles Kingsley, Christina Rossetti, Alfred, Lord Tennyson, and Anthony Trollope. William Morris and Edward Burne-Jones read The Heir of Redclyffe aloud to each other while undergraduates at Oxford University and "took [the hero, Guy Morville's] medieval tastes and chivalric ideals as presiding elements in the formation of the Pre-Raphaelite Brotherhood." Yonge's work was compared favourably with that of Trollope, Jane Austen, Honoré de Balzac, Gustave Flaubert, and Émile Zola.
Sir John Arthur Ransome Marriott called her:
... not only a prolific novelist, but a serious student of history, especially in its personal aspects. Having dealt in The Constable's Tower with Hubert de Burgh, with his famous defence of Dover Castle against Prince Louis of France (1213), and his still more famous victory at sea off Sandwich, and with Edward I as a crusader (The Prince and the Page), Miss Yonge drew on the Vie de Bertrand du Guesclin as well as on Froissart for her fascinating tale The Lances of Lynwood. With characteristic modesty she expressed the hope that her sketch might "serve as an inducement to some young readers to make acquaintance with the delectable old Canon (Froissart) for themselves." The wise, of all ages, will fulfil her hope.
So popular were her works that
A midshipman was able to supply from memory a missing page in his ship's copy of The Daisy Chain. An officer in the Guards, asked in a game of "Confessions" what his prime object in life was, answered that it was to make himself like Guy Morville, hero of The Heir of Redclyffe.
C. S. Lewis thought highly of her, at one point bracketing her evocations of domestic life with those of Homer and Leo Tolstoy. Abraham Kuyper, who read The Heir of Redclyffe on the recommendation of his fiancé, Johanna Schaay, found it a moving experience. The novel was "next to the Bible in its meaning for my life." Yonge was one of the favourite writers of Barbara Pym, who mentions Yonge's novels favourably in several of her own novels.
However, according to the critic Catherine Sandbach-Dahlström, Yonge's work has been "constantly be-devilled" by a "tendency to confuse the moral quality of [her] view of life with the quality of her literary expression".
Her novels such as The Daisy Chain, The Young Stepmother, The Trial, and The Three Brides encompass Victorian problems of urban pollution, sanitary reform, and epidemics of cholera and typhoid. She urged social, economic and medical reform of dirt-ridden Victorian cities. The dualism found in her writings, writes Alethea Hayter, "serves to illustrate the triumphs and mistakes of reforming zeal, to contrast selfish irresponsibility with courageous philanthropy, to balance tradition against progress."
Yonge's work has been sparely studied, with the possible exception of The Heir of Redclyffe.
Graham Greene used epigraphs from The Little Duke for each chapter of his 1943 novel The Ministry of Fear. In Chapter 1, the protagonist Arthur Rowe buys a copy of the book at a fête for sixpence.
In 2015 a sculpture by Vivien Mallock was installed outside Eastleigh railway station, as a tribute to Yonge for having effectively named the town. It shows her at the age of about 45 when she named Eastleigh parish. It shows her sitting on a bench with a book on her lap, with space for members of the public to sit alongside her.