Wobs, I feel for you. I have a fundamentalist cousin who sounds much like your sister.
On that topic, I just came across this at Hullabaloo:
Rove's job, and by extension McCain's job, is to basically nuke reality and leave everything open to question. In a world where there is an objective reality, Republicans can't function and certainly can't run their electoral strategy. They need two things - ignorance and an unknowable truth. That's been true since well before the Mayberry Machiavellis arrived in Washington and will be true long after they leave.
And so Sarah Palin's ignorance of the Bush Doctrine is OK, because most Americans don't know what it means either. In fact, the less knowledge a world leader has, the better, because they can't be muddled up with all those facts about how occupied countries historically resist occupation or how countries become interdependent or which country wields power over their sphere of influence, or such related nonsense. Candidates who have little interest in foreign affairs are "authentic" and the kind of reg'lar folks we need to rule with their gut-level belief.
If ruling from the gut is good, voting from the gut must be divine...