Possible Clues:

• Feminine pronoun
• Of a female, reflexively
• Actress' cameo role, maybe
• Whom Margot Robbie played in "The Big Short"
• What a famous woman may play on TV
• Emphatically a female
• What a famous woman may play in a movie
• That woman, to that woman
• 'England hath long been mad, and scarr'd ___': Richmond in 'King Richard III'
• She, reflexively