In the wake of the disappearance Nora and Charlotte try all sorts of paranormal methods to divine Rose's location. Much of this centers on their fascination with the Time-Life series of books on the supernatural, the ones that were constantly advertised on television in the early-1990s. Nora is disturbed by their forays into the supernatural, but Charlotte is older, wealthier, and bossier, so they continue.
As adults Charlotte is still annoying. I couldn't figure out why Nora was so willing to spend time with her and share her secrets. It's understandable as children, but it made little sense as adults. We do ultimately discover what happened to Rose, but not before coming to the conclusion that Charlotte really needs to go away.
Emily Arsenault, In Search of the Rose Notes (William Morrow, 2011) ISBN: 0062012320