Thanks!! I wrote this for the hp_uk_meetup organized by a friend of mine; she wanted some fics to put in the attendees' gift bags and the recipient had requested Hermione and books, so it all fell into place rather quickly. Though I didn't initially intend the, er, alternate usage at the end I was pleased with how it worked out. "Come to the Dark Side, Hermione...mwahahaaaaa..."

And yes, well spotted -- I had in mind that Luna Johansson was Luna Lovegood's mum, who was so good at inventing her own spells :)