Glinda is a troll. She makes this "little girl" go on a journey to see the Wizard-- a journey where she was almost killed multiple times and which leads her to committing involuntary witch-slaughter. Then she laughs when she makes the big reveal after Dorothy has gone through all this shit and the Wizard takes off in the balloon without her that she "could have gone back to Kansas all along." What a total bitch.
I like her in the book better since Dorothy only meets her in the second half. The book is also the reason why I own a pair of silver flats
I also want to make a Tin Woman costume, but I have other projects planned already.
ETA: Having a one-person movie-viewing after party by listening to the "WICKED" musical soundtrack.