I think it's a load of crap.
So let me get this straight. She's mugged, beaten, and "carved on", and she refuses medical treatment? Why? Only people with something to hide or people with no insurance would refuse to get their injuries looked at by a trained physician.
If she works for the McCain party, they would pick up the tab if she had no insurance. It would be good P.R. for them and they could milk the story even further and trot her out at rallys and such.
I smell a rat.
And if it comes out that she did fabricate the story, the cries of racism will be so loud, it will be deafening. JMO