Possible Clues:

• Her niece is Dorothy Gale
• Uncle Henry's wife
• Speaker just before ''Over the Rainbow''
• 'The Feeling We Once Had' singer in 'The Wiz'
• "The Wizard of Oz" lady
• Literary character whose house is uprooted by a tornado
• Literary character to whom Dorothy said, 'I'm so glad to be at home again!'
• Her niece is Dorothy
• Baum character