[2] Bettany wrote novels,[6] including The House of Rimmon (1885),[7] Two Legacies (1886), A Laggard in Love (1890),[8] Trewinnot of Guy's (1898),[9] Frank Redland, Recruit (1899),[10] The Avenging of Ruthanna (1900), No Vindication (1901), An Unwise Virgin (1903),[11] The Sinnings of Seraphine (1906),[12] The Mystery of Magdalen (1906), The Fraud (1907), Ashes of Passion (1909), The Thirteenth Man (1910),The House of Blight (1911), The Mystery of Mere Hall (1912), The Go-Between (1912),[13] The Stolen Man (1915), The Trap (1917), The Hired Girl (circa 1920), The Temptation of Gideon Holt (1923),[14] The Whip of the Will (1927), Tales of Our Village (1928), The Blue Diamond (1932), A Village Mystery (1934), The Woman Who Understood (1935), Devastation (1940), and The Affair of Maltravers (1949, published posthumously).

[16] Bettany's short stories and poems were published in The Argosy,[17][18] Belgravia,[19] Lippincott's,[20] and Temple Bar.

[22][23][24] Bettany wrote a cantata for children's voices, Elsa and the Imprisoned Fairy (1889), with music by Thomas Murby.

[25] On 1 August 1878, Jeanie Gwynne married botanist George Thomas Bettany,[26] "a scholar and editor of high repute".

[1] In 1892, the widowed Bettany married her husband's colleague, fellow writer Coulson Kernahan.