The last two decades of Gibbons's life were uneventful and lived almost entirely beyond the public eye. She kept her health and looks until almost the end of her life—in a biographical sketch, Jill Neville recorded that "her beauty endured, as did her upright carriage, typical of Edwardian ladies who were forced as girls to walk around with a book balanced on their heads." As well as her unpublished novels she wrote occasional short stories, two of which were rejected by the BBC, and contributed three new poems to Richard Adams's 1986 anthology "Occasional Poets", a work which included verses from part-time poets such as Iris Murdoch, William Golding, Alan Ayckbourn and Quentin Crisp. These were Gibbons's last published works. One of Gibbons's poems in the anthology was "Writ in Water", inspired by her love for the poetry of Keats. In 2013 the manuscript of this poem was presented to the Keats-Shelley Memorial House museum in Rome.