Erin is an expert in Iron Age epic poetry, specialising in the use of emotion in maintaining social order in pre-beaurocractic societies. She has published widely on early medieval literature and culture, as well as a significant body of interdisciplinary archaeological research, with a particular focus on shipsettings, medieval maritime culture and monumentality. Before coming to Flinders University, she was at Monash University (Melbourne), University College Dublin, Trinity College Dublin and Queen's University Belfast. She is currently Senior Lecturer in Medieval Literature and is a member of the ARC Centre of Excellence for the study of the History of Emotion: War and Emotions research cluster. Her first monograph, In Enigmate: the history of a riddle from 400-1500, was published in 2018.