Good analysis. The less the party supports her now, the less she is beholden to them later, and the greater chance she has of throwing these statist clowns out on their behinds if she wins.
I see the hand of God in all this. McCain the maverick picks her because she's a maverick who crusaded against her own state GOP. Who else would have picked her? He gives her a platform to launch herself and her story into the political stratosphere, where she eclipses the candidate himself and becomes an instant draw. She's now got an army of eager voters at her back without significant support from the party machine--which is unprecedented and miraculous. She can run as an outsider amidst what looks to be a white-hot anti-party, anti-incumbent mood among the voters. And if she wins, she is beholden to none of the party hacks and has a great opportunity to throw the careerists out and replace them with a better crop of leadership.