Although most of their work was published jointly it is believed that Grace did a large amount of the actual writing, and she also produced some independent work which, according to expert opinion, was deeper and more important than her husband's. In total, they published about 214 papers together, along with four books. She began to publish in her own name in 1914, and was awarded the Gamble Prize for Mathematics by Girton College for an essay "On infinite derivates" in 1915. This work was stimulated by developments in microscopy that allowed real molecular motion to be viewed. Her work between 1914–16 on relationships between derivatives of an arbitrary function contributed to the Denjoy-Young-Saks theorem.