In The Wonderful Wizard of Oz, the Wicked Witch of the East is killed when the Dorothy's house falls on her. Dorothy then get the silver shoes (or red Ruby slippers of the classic film) that the Wicked Witch had been wearing when she was killed.
In Oz the Great and Powerful, we learn about the origin of the Wicked Witch of the West and East. But, in this movie :
Evanora, presumably the Wicked Witch of the East, is defeated when the emerald necklace, from which she apparently get some of her powers, was destroyed. There is no mention of any magical shoes, at least none that I were aware of.
Did I miss something, or the back story of those shoes remain unexplained. Is there a reason behind this omission?