If this was in any way a traditional tarot deck, I would be pretty danged confident slotting this card into the Major Arcana as "Strength." That's why it's card #11, plain and simple.
By the way -- although Dorothy has been a brunette in pretty much every movie adaptation that I can think of, in the books W.W. Denslow and John R. Neill both drew her as a kind of strawberry blonde. When Walter Murch made Return to Oz, he honored movie tradition by keeping Dorothy a brunette... although for the purposes of contrast this necessitated changing Ozma -- who was always a brunette in the books -- into a blonde! Murch also bowed to public perception by keeping the magic slippers ruby-colored (they are silver in the books) -- even though by doing so, the Disney company had to pay a licensing fee to MGM. Just a little bit of trivia for you.