By M. T. Anderson [LibraryThing – Goodreads]
With Lily spending so much time starring in books, her mother is starting to get worried about her own fate, since moms in books often don’t fare so well. However, her health-and-sanity-restoring vacation takes her to Todburg, the most haunted town in America. And the thing that returns may look like Lily’s mother…but it very definitely is not.