Literary career
Scott began writing in the late 1920s, in order to supplement the family's income. She wrote humorous sketches, based on her own life on the farm and starring the character "Barbara", a farmer's wife, for the Dunedin Evening Star, The New Zealand Herald and other newspapers on a weekly basis. In 1930 the New Zealand Artists' Annual recognised her as its "Annual Discovery". She continued writing for newspapers in both New Zealand and the UK for the next fifty years, at times as many as fourteen articles a month. Scott's first two novels, Where the Apple Reddens and And Shadows Flee were published under a pseudonym, Marten Stuart, in the mid-1930s. Unlike her later novels, they were historical romances set in early nineteenth century New Zealand, and she was later to say that they were "better buried in oblivion".
Her newspaper "Barbara" stories proved so popular that they were published in five collections over the next twenty years, beginning with Barbara and the New Zealand Back-blocks (1936), and recorded for radio broadcast. The first collection was published by Thomas Avery & Sons, New Plymouth and they were thereafter published by A.H. and A.W. Reed. They were set on the New Zealand "backblocks", a term used in Australia and New Zealand to describe remote rural farmland. In a review of Barbara Prospers, the Otago Daily Times said that her Barbara books were "a series of lively, intimate pictures, by turn uplifting or depressing, but never pessimistic or cheerless, of the everyday happenings of backblocks life". The Manawatu Times said the first collection was "a gem which should be on the shelves of all collectors of New Zealand books", and warned readers that "the whole edition is likely to be sold out by Christmas".
Scott's novels were mainly light and contemporary romantic comedies set in the King Country, published both in London and New Zealand. They were described by Joan Stevens as "certainly readable; they follow an easily foreseen pattern, evoke the expected reactions, and provide comedy without ever stretching the faculties too far". Stevens highlighted One of the Family (1958) as one of the most successful of the novels, about an English uncle visiting New Zealand. They did, however, have an undercurrent of seriousness, due to Scott's family's experiences in the Great Depression; many of her stories featured themes of debt and poverty, or the failure of being forced to leave the backblocks and return to living in town. She also published three volumes of plays, and in the 1960s collaborated with fellow New Zealand writer Joyce West on five detective novels starring the character Inspector Wright.
In 1940 Scott was asked how she managed to find time to run a farm, a family and a home as well as write. In response, she said that her husband would be annoyed if she said she ran the farm, that nobody could be said to "run" a family, and that her home ran itself.
Scott was a household name in New Zealand during her lifetime. New Zealand academic Terry Sturm wrote that she was "the first popular novelist to set all her fiction in New Zealand and to think of her readership as primarily a New Zealand one". Her books had better New Zealand sales figures than any other New Zealand author. Her novels were also popular overseas and translated into several European languages. In Germany she had several bestsellers; her book Breakfast at Six, first published in 1953 and the most popular of her novels, was translated into German and published as Frühstück um Sechs by Goldmann in 1956, and a new edition was published by Weltbild in 2001. An article in The Press in 1957 noted that very few other New Zealand authors had had works translated into foreign languages at that time, save Katherine Mansfield and Ngaio Marsh.