well how bad would it look if her former running mate did not even endorse her?
the media meme would be this:
"Even her former running mate does not think Palin can be Potus"
Mccain is Palin's Bridge to the middle like Palin is Mccain's Bridge to the Right.
Bottom line: Palin helping Mccain in his relection bid is not only smart, but it's necessary