I've imported both kinds of saves, one where Pallegina fulfilled her orders, and another where she disobeyed. (I thought I was doing the Right Thing there by encouraging her to disobey, and was very happy to see that while the consequences to the Dyrwood were good, the personal consequences to Pallegina herself were terrible. Should've seen that coming, bravo Obsidian! )
Anyway, no, her personality doesn't change either way. She's much too bull-headed to have little things like being disgraced get in the way of doing what she thinks is right.
Also, on my first playthrough, I had her and Tekehu in the party for quite a long while. It was great to see how they clashed, especially about what being a godlike meant to them. I thought one of them would surely leave the party... but was truly surprised and touched when they became, if not actual friends, at least people who respect each other. Another bravo for that last bit of banter dialogue.