Factual error: When Dorothy runs away from the hospital she is chased by a nurse, who has a torch. Earlier in this film the doctor said they two months away from the 20th century which gives the year as 1899. Such a modern torch that the nurse had was not invented yet.
Return to Oz (1985)
Ending / spoiler
Directed by: Walter Murch
Starring: Piper Laurie, Fairuza Balk, Jean Marsh, Nicol Williamson
More mistakes in Return to Oz
The Nome King: Don't you know that eggs are poison?
Billina: Poison, indeed!
The Nome King: Poison... Poison to... Nomes.
Trivia: The only film directed by Oscar-winning film and sound editor Walter Murch. During principal photography, some production troubles almost caused the film to be shut down. Murch's friend George Lucas (of "Star Wars" fame) evidently watched some of the footage Murch had already shot, and impressed by what he saw, convinced Disney to resume production.
More questions & answers from Return to Oz
Answer: She was in the human world so she was in disguise.