Actually, Sorcha, Rowling sounds pretty classy, from what I've heard. There was a little piece in my loocal newspaper that said she was scheduled to receive an award from Queen Elizabeth (OBE, I think), and Rowling cancelled because her daughter was sick that day. The ceremony was re-scheduled, I believe. So I think she's really doing these books for charity. And who better to make sure that they fit into the Harry Potter corpus properly?