She was played by Margaret Hamilton, warts and all.
The light and the dark. Good and Evil. "Ding Dong the witch is dead". And they all lived happily ever after. Dorothy awoke to discover it was all a dream/nightmare. The Deux ex Machina in the movie. She didn't KNOW she was in a dream/nightmare. She didn't find out until she awoke. Do you wanna wake up or are you having the time of your life in this current dreamscape/nightmarescape? Wanna escape?
