Susini worked as a personal secretary for Abel Bonnard, the minister of national education during the fascist Vichy regime.[2] After the war, she worked until her retirement as a librarian and curator at the Bibliothèque nationale de France.[2]
Susini was the author of various works of literature, beginning with her "Corsican trilogy" of two novels and a play: Plein soleil (1953), La fiera (1954), and Corvara (1955).[1][3][4] Her writing speaks of Corsica, of the island's isolation, and of the power of unexpressed feelings.[1][4] The novel C'était cela notre amour is among her best-known works. Albert Camus encouraged her to pursue writing about her native island.[1][3]
From 1971 until her death, she served on the jury for the Prix Femina literary award.[5]
