Nothing wrong with tragedy. He would have made a great priest, but a lousy lover. And I think she would claim she hardly needed one. She knew all along he loved her. Such tension is a sign of goodness and humanity, not pathetic weakness or depravity.
Many heroes fall once, twice or a few times before they get their proper focus.
Her willfulness is surely a huge problem and so is her refusal to submit, but to expect her to be delighted to marry her father's choice, a real dough-boy, after she has been with Lo, seems unrealistic. She does not seem despicable for rejecting that choice. So, I felt no sorrow for her on this account. I think the film did not want us to be sympathetic towards her but sorry that such skill would be used for evil and not good. I think we were supposed to be rooting that she submit to Yeoh's friendship and the Master's instructions so a powerful force would be harnassed for the good.