A good gift might be a great book bag, homemade bookmarks, and a reading light. There are some great books out there that she may not have read yet such as the Grace Lin books for kids, The Greene Knowe books, which are magical and intriguing as well as the Cornelia Funke books. Can you ask her what she has read?
She might be ready for The Gaia Girls :-)
I love the amazing amount of great books out there for kids! Hope this helps!