Well, in all fairness, much as I trust her about as far as I could throw her, she’s been a Democrat since 1968, and switched to support Eugene McCarthy. And Rockefeller was pretty moderate for a Republican, even then (there is that working for Barry Goldwater thing, though).
I think she’s just very centrist and corporatist. Won’t rock the boat. Focus grouped to death, does what’s politically expedient. Not a conviction politician.