Eh. I haven't read the books, but I don't see anything really that sensational in the revelation or that there was any motive behind it. As a writer myself, there are usually lots of things in my character's past that don't show up in stories but that do factor into character's motivations and whatnot.

Also, it isn't like she had a press release saying it. It was in response to a question asked by a kid at a book event. More of a footnote and a non-event to me, but again I haven't read the books or seen any of the movies.

ex-Muhr