By the way, did anyone else noticed that her eyes are of different colors?
I noticed that. I think it is because she is half Al Bhed and green eyes seems to be a very popular gene with Al Bheds.

Yuna I think can be very naive. But you have to give props to someone in her shoes. It can't be easy going through what she did. In FFX-2, she changed a lot. She was much more mature and just free spirited, like someone said.