 She has built up an international reputation in meteoritics, publishing many papers on the carbon and nitrogen isotope geochemistry of primitive meteorites, on Martian meteorites, and on interstellar components of meteorites.Grady was appointed a Fellow of the Meteoritical Society in 2000, a Fellow of the Institute of Physics in 2012 and a Fellow of the Geochemical Society in 2015 (these are honorary appointments, bestowed by the President and Council of each Society, following nomination by peer-scientists).She has been a Fellow of the Royal Astronomical Society since 1990, and a Fellow of the Mineralogical Society of Great Britain and Ireland since 1992.