Kristen Stewart playing Bella in Twilight?

I have nothing against her as a person, and from what I've seen in other movies she's a decent actor. But I don't agree with the decision to cast her as Bella Swan. I've seen every preview, trailor, and/or sneak peek that's ever been posted, and in each and every one, she seems bored and absent minded. As though she's there as a being, but she's completly thinking of something diffirint. It's awful, but who knows maybe once it actually premiers it won't be so terrible. She doesn't look anywhere near decent in any of the clothes that are suppose to look so great on her either, especially the blue dress, it's horrible. But I suppose everyone just pictures it being more than perfection, without the details while we were reading the book and then to see it for real, is something totally different. That's just my perspective though.