An Ordinary Girl, a Magical Child By W. Lyon Martin may be something your child can relate to.
And if it's anything like Buda, Texas was while I was growing up.. I can totally relate to the small town with no understanding.
Good luck. I haven't crossed this path yet myself, but with my little one's father moving to Texas to become a preacher (?!) she's been taught more about god and Jesus than the god and goddess aspect of many other religions. I'm waiting for her to be ready and to ask on her own, much like yours did.
Blessing Bright and Dark,
"The artist is nothing without the gift, but the gift is nothing without work."
-Emile Zola (1840-1902)