Chrestomanci's Garden

I've never noticed before how reminiscent one part of the climactic scene at the end of Charmed Life is of the killing of Aslan in The Lion The Witch and The Wardrobe. I'm talking about the bit where the baddies are preparing to sacrifice Cat, and they've captured Chrestomanci. There's this crowd of witches and warlocks, all jabbering and jeering and waving sticks, just like all the wicked followers of the White Witch. When Chrestomance is captured, and tied to a tree, they let out a kind of moan, and Chrestomanci himself is sad and tired and lets out a great sigh. And of course, there's the stone on which they are going to sacrifice Cat. And Chrestomanci says something to the effect that they don't know what they are doing, that they are going to wake up ancient powers in that place. All this takes place in this beautiful, almost sacred, garden that is part of Chrestomanci Castle, that DWJ admitted to Judith Ridge in an interview was probably like a medieval sacred garden. It's interesting, because I think the Narnia echoes, if I'm right, lend more of the "awesome" to the scene...