Hurley's research concerned the biochemistry of prenatal nutrition: how dietary deficiencies could cause specific defects in the embryo, and how those deficiencies might best be prevented. For Example, she was author or coauthor on over fifty published articles about how manganese is absorbed and metabolized, and over 170 papers on zinc deficiencies. Her textbook Developmental Nutrition (1980) synthesized many of her research interests. She also translated a text, Embryogenesis, originally published in German.