I believe like most that she is Mccains pit bull, she says what he would like to but has to step back because the vultures in the media are waiting for just that moment. Mccain knows she is the future and he also knows if it weren’t for her he would be dust. This sets Sarah up for the future in the conservative movement. This is a team, Mccain I’m sure would love to come out of the gate fighting but needs to stay civil and repectable.
And you just know Zero and the media are waiting for his “he’s gone berserk with rage” moment.
He can -not- have one if he wants to pull this off.