Well, if she is not from the Boston area, a really great pick would be one of the books about the Boston Harbor Islands. Just go to Amazon books and search on "Boston Harbor Islands" to see a selection. Most will have maps and great photographs and descriptions of what each island offers in the way of events or features.
Too many Bostonians may never check out any of the harbor islands, so maybe she can get a new co-worker to join her on a tour of some of them. Anyway it could be an ice-breaker idea, something to chat about on a coffee break at her new job...