is Kiera masturbating?

Hi, this is part of my media studies A level work at college, id be grateful if any of you could help me out by please answering the following:

Do you think that the roles that Kiera Knightly has played through out the body of her films has changed in recent years?
Does she always seem to play the same role? Have her roles changed in the recent years? or have her roles always been different from each other?
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