It really isn't. They make up the sex of the character themselves. Which was the idea. It doesn't track with whether the reader is male or female, either. I think MJ is the only one who's certain of her parentage.
Time does fly.
I haven't the The Moon and Sun yet. I'm in Sydney too and wasn't smart enough the order it from Amazon. Have you been enjoying the Dreamsnake discussion. The Dreamsnake discussion was interesting. It's kind of strange to be watching people discuss my work.