Trivia: Roald Dahl hated the ending of the movie so much that he would drive past movie theaters with a megaphone and tell people not to watch it.
Trivia: A lot of the witches who attend the Grand High Witches meeting are actually men dressed in women's clothing.
Trivia: Roald Dahl was happy at learning that Anjelica Huston was playing the Grand High Witch as she was his preferred choice for the role.
Trivia: In the ending for the book, the boy stays a mouse, as opposed to the movie, where he becomes human again. Roald Dahl hated the movie ending.
Answer: We've already witnessed Bruno being turned into a mouse so there's no need for us to see Lukes transformation as we already know how his transformation is going to be.