Also did yas notice in the interview, she was telling about some type of weapon class she took. The Joker doing the interview was making light of everything, which I guess is his job, but she was giving serious observations.
He asked her what she learned. She said she learned that the most diabolical one wins. That you to go into the fight fearlessly to win.
She also talked about her weapons. Said she was using dual swords and commented about a guy who was given a large sword as tall as he was and that he held it straight out and spun around. She commented twice, interrupted by the Joker, about how she really was trying to figure out how to beat him.
She was taking it seriously and really trying to win. She says she wasn't the best there.
Her skill might not be the best, but you can't fault her attitude. Not just a pretty face..and everything else.