Anybody notice something with those photos? When she knew she was having a photo taken of her, she seems to be having an incredibly "jolly" laugh. Maybe that's part of her way to hide her discomfort.
Back when I was doing that musician thing, I once had a photographer (thankfully, honestly) tell me not to smile for photos. I saw the proof strip and agree... Though they were straight, there was something that they just didn't photograph well.
And, since I don't like to be photographed myself, I have learned that when I am photographed, I shut my goddamn mouth. Oh, I hate my photo being taken. the few exceptions include when they're with my kids and police state required identification crap.
As for Karen Jackson's statements that she doesn't look as well as she did, the desert air will do that to you. It dries the shit out of everything, add in some smoking on any sort of substance and leatherface is on its way...