C.F.
If she enjoys art, you could run to an art supply store or Michael's and buy her some professional art supplies. I enjoy art myself, and had a blast trying out new mediums as a child. My mother gave me all kinds of neat (and usually inexpensive) things to experiment with.
I would recommend a sketch pad or sketch book (an artist can never have too many), a portfolio to keep finished drawings in, a set of shading pencils (they make numbered pencils in various shadings from very light through the standard number 2 all the way up to a deep charcoal color (9 or 10), and you can often buy them in sets, a rubber gum eraser(brownish or gray in color; great for pencil art, as it truly removes the pencil, unlike the erasers kids have for school), a set of watercolor pencils (look like color pencils, but can be painted on to make a picture look like watercolor, or a set of oil pastels (look a bit like chalk, feel smooth and kind of oily, great for learning color and blending).
Not to say you should buy all of the above, but you can mix and match a sketch pad with oil pastels or shading pencils, or watercolor pencils with a set of paintbrushes.