Oh dear, I haven't encountered Rainbow Fairy yet, thank goodness from the sound of it! DD6 just got into Junie B. Jones at the end of Kindergarten, but I quickly discovered that those were "read it to yourself" books, along with Magic Schoolbus and some others -- glad to see it's not just me.
As for the question at hand, I would say just leave it alone and don't worry about it -- if she has books, she will get back to reading them when she doesn't feel like she's on display. It's probably just been too big a deal lately. Ignore her reading or lack thereof, and "seed" an occasional irresistible tidbit of a book around the house. She'll bite.
