Yes. She is a Heartless. Quite unfortunate.
You know what Rhiannon means? *thinks* Oh, you mean her name. Yes, I belive she was an earth goddess, or something like that. I first heard that name in the book I am Morgan le Fay,(An incredible book, read it!)when Rhiannon was a fay in Avalon. It seemed fitting.
Hmmm. Now let's see, what shall I do with this next chapter. *shoves Muse away*