Secondly, isn't empathy, vision, ambition and an ability to rally people incredibly important for a politician? Politicians aren't supposed to know everything, but rather work with appropriate experts and aides.
Not seeing it. I've spent some time working in a (state, not federal) legislative office and have a political science degree (specialized in pragmatics of US politics.) I've seen some of her interviews. I don't see anything that indicates that she would be incompetent as a legislator. Could you explain the basis for your assessment?
Now, this could be that she's not good at interviews, and feels the need to keep talking to appear competent. She could know far more, and just be unable (yet) to bring it out in front of the cameras. But to me, she comes off as talking without knowing. That scares me in someone who can write legislation.