Her approval ratings as Governor are no fantasy, you cannot sell that lie.
Who's selling a lie? Whatever her approval ratings were at one time, it's pretty clear that those ratings fell precipitously during her failed VP bid, and then fell even more after she quit. The fact of the matter is the longer she was in the job, the worse her approval rating became, which really isn't all that uncommon with any politician. But, you don't describe a politicians tenure in office by the results of a single poll, especially a poll taken in early in the politician's tenure. Things change.
Barack Obama at one time enjoyed near 70% approval - is it then accurate to say that Obama enjoyed one of the highest approval ratings in history? Of course it's not. George HW Bush had a 92% approval rating at one time. Was George HW Bush the most popular president in history? Yeah, I don't think so either.