She is an undergraduate advisor for the Social Science major and the faculty advisor for the Social Science Club. Dr. Sills carries out research in Maya archaeology as a collaborator on the Underwater Maya project in southern Belize. Her research interests are 3D digital imaging, underwater archaeology, sea-level changes, ancient economies including salt production, and ancient Maya wooden architecture. She has published articles on her research in Anthropology News, The SAA Archaeological Record, Journal for Archaeological Sciences: Reports, Mexicon, Research Reports in Belizean Archaeology, and ACUA Underwater Archaeology Proceedings. ​