I found a FFX-2 trailer at a site and Yuna speaks in English but the bad news is, she only speaks about four lines. It's the same voice actor but Hedy Burgess is MUCH more better now, no more long, spaced out sentences.

The trailer can be seen at http://www.techtv.com/xplay/shownote...461422,00.html

Scroll down until you see a picture of a Ninja beside Final Fantasy X-2 They got the picture mixed up and put Yuna's picture above it, but despite that go to Final Fantasy X-2 (PS2) Trailer.