She specializes in multi-isotopic analysis of ancient human skeletal remains in order to assess diet and residential mobility, and their relationships to disease, well-being, and cultural variables such as gender, status, and political economic processes. She has excavated and/or studied Peruvian skeletal populations from Machu Picchu and the Cuzco region since 2004; her current research is based in Cuzco, once the capital of the Inca imperial state. Her recent publications can be found in Journal of Archaeological Science and International Journal of Osteoarchaeology. In addition to her work in Peru, she has also published and presented collaborative isotopic analyses of populations from Christian-era Sudanese Nubia, pre-Mississippian North Florida and Imperial Mongolia.