I'm so glad you enjoyed the book so much, Duchess! It's always good when you're sad that it's finished.
I do think it's especially fun for TRF members and other royal fans, because we all already feel like we know these people. And thanks for reviewing on Goodreads!
I am a long way from writing my next book, partly because I can't imagine starting over again (this one took me 3 years to write), and partly because I'm so busy marketing this one (I've got book signings scheduled for 6 of the next 8 weekends, which is awesome but overwhelming!). But I'm sure I'll write another one at some point. There are lots of things floating vaguely in my mind at the moment, but I think the story that most catches my eye right now is Philip and Elizabeth's love story.