being lower class, she is not that educated, though she does have street smarts. she is conniving, and will stop at nothing until she gets her child, as seen when she tricks jack out of his cow for the beans. she is logical, and manipulative(if the end is right, it justifies the beans), but she doesn't know when she is being manipulated, as seen where she is taken advantage of by the prince. She is wooed by him, and afterward, is confused. (what was that? was that me? was that him?....did I kiss him back? was that wrong? and so on.
I think she finds peace with her decision in "moments in the woods" (but if life were made of moments, then you'd never know you had one.) she loves her husband deeply, but is frustrated with him, but comes to the realization that she would rather be poor with her baker, than be a mistress to a prince (...makes the "or" mean more than it did before. Now I understand, and it's time to leave the woods.)
It would have been interesting to see where she would have gone after the affair, but alas, we'll never know.
"I'm an American, Damnit!!! And if it's three things I don't believe in, it's quitting and math."