Hahahaha, but how about the rest? Vocabulary, posture, accent and such? I thought it sounded very british and noble, without being stuck-up, and I mean that in a good way. I especially loved the way she asked "What is that?" When Polly tries to climb down the wing after landing on the flying airbase, that was hilarious, and appearently improvised by Jolie.
I can't help but think though that the Mantas remind me of something from a comic book, specifically one of the many classic comics from western Europe (Belgium, The Nederlands and France mostly).
Frank