Actually, and I just confimred it in the book, Aslan pounces the witch upon his arrival with the former stoned creatures. In the next chapter it says the witch was dead, so I always thought Aslan pounced and killed the witch, I mean that's the logical conclusion. Just like in the movie. The witch in the Silver Chair is a different one. I really enjoyed the movie and would like to see the 6 other books done as well.
