[3] Marie Van Vorst also wrote regularly for Harper's Magazine,[4] Good Housekeeping, and other national publications.
[5] Van Vorst's books include Philip Longstreth (1902), Poems (1903), Amanda of the Mill (1905), Miss Desmond (1905), The Sins of George Warrener (1906), The Sentimental Adventures of Jimmy Bulstrode (1908), In Ambush (1909), First Love (1910), The Girl from His Town (1910), The Broken Bell (1912), His Love Story (1913), Big Tremaine (1914), Mary Moreland (1915), Fairfax and His Bride (1920), Tradition (1921), The Queen of Karmania (1922), Goodnight Ladies!
[11] In 1922, Van Vorst was encouraged by artist Mary Foote to take up painting,[12] and exhibited her art in New York City.
[1][13] Van Vorst in 1916 married widower Count Gaetano Cagiati in Paris in a small wedding ceremony at Notre Dame Cathedral.
[14] She later adopted a war orphan, a son she named Frederick John Barth Van Vorst.