She is, after all, an incredible diplomat - it's as much a part of her definition as bending steel - but she doesn't really do deception or emotional manipulation any more than the average superhero uses a gun. Sure, she basically knows how, and she'll use it if it genuinely is the best tool for the job at the moment, but she's seldom going to perceive it to be - she has better, less harmful ways, and besides, it's just not her style. Which removes a huge part of any normal diplomat's arsenal. That she doesn't even need half the toolbox to be twice as good says a lot for her.
I love that. Lying is as repugnant to Diana as killing is to Clark or Bruce. I've had the last four entries off this series sitting in open tabs for the last few days and jut read 'em all in one go. Dammit, I've got one more Gail BoP trade left, and then I pretty much have to start collecting Rucka's Wondy, and whatever trade this story's in, too. I'm blaming you, Bluefall. This is all your fucking fault.