She looks really pissed. She's snarling, her eyes are more closed, her eyebrows have pulled together in the classic angry position and her lips have tightened up. I don't know if she's pulling for McCain/Palin or she hates to see a campaign managed so poorly, but she looks mad and/or frustrated.
As a semi-baseline, the image below shows what she looked like a split-second before the snarl. She's saying the "th" in "they". What a difference. Body-language is so fascinating.
