 She served as Director of the Cather Project and editor in chief of the Willa Cather Archive, both of which were housed at UNL, and also served as a general editor of the Cather Scholarly Edition, published by the University of Nebraska Press.She also served as director of five international seminars on Cather and editor of 18 volumes or journals, many of which were about Cather.Rosowski was married to James Rosowski, a UNL biologist.