Since it has been established that this young avid reader enjoys reading L'Engle why not have her continue with the entire quartet? They are: A Wind at The Door, A Swiftly Tilting Planet, and Many Waters. She might find some of these other books more difficult but I doubt it. She is already reading L'Engle so she obviously enjoys the challenge. Good for her!

We all know how fun it is for us to read an entire series written by our favorite authors. Why not turn her on to the world of being a completest? After all, it's addicting, adventurous, and a great habit to pick up if she is to continue reading Science Fiction.