Abbey, Lynn. Out of Time (New York: Ace Books, c2000) 311 p.

Emma Merrigan is Acquisitions Librarian at a midwest university library in the town of Bower (sounds like Ann Arbor to me). She helps the Systems Librarian Matt Barto keep the network running despite interference from the University Librarian Eugene Shaunekker. Emma's attention moves elsewhere however when she discovers she has otherworldly powers.