Watch her facial expressions, especially at the end, when she is talking about the first time she met the Queen and had to curtsy. Harry has a thunderous look on his face, which changes to a look of affectionate bemusement when she finished and looked at him.
Did she really curtsy in that manner? I doubt it. But she thought it would make a cute anecdote, and whether it was true or not didn't enter into the equation.
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