She received a Fulbright travel award and was sponsored by the English Speaking Union to teach as a graduate assistant at the University of Illinois at Urbana–Champaign, where she earned an M.A.
After marrying journalist Charles Monaghan in 1958 in Cambridge, the couple moved to Brooklyn, New York, where they raised their three children.
She served as editor or coeditor of its newsletter, "History of Reading News", from its inception in Fall 1976 to Spring 2002.
She also published numerous book chapters, journal and encyclopaedia articles, reviews, and a catalogue, including several coauthored with Douglas K.
[citation needed] Young American Readers[6] is an exhibition drawn from donations to the Kenneth Spencer Research Library from Charles and E. Jennifer Monaghan, totalling over 1,500 volumes.