I really loved this movie, but I don't think that it was about her amibitions. Her problems were, she was trying to make everyone happy because this was a fast track move for her. She was a nice middle class girl, that only wanted to make it in life. It was all the other people that wanted to use her to get to the top.
Oh, there was another viewer that said she had a nervous breakdown. Believe me that was no breakdown. She just had as much as she could take. Anytime you take charge of your life, and start telling people what you want, and not just say OK, that is not a breakdown, that is command and control. If I'm not understanding something, please tell me. I think they said that she could never be alone with a man. If anyone should have had problems and gotten fired was the VP. The man was alone with her more than once, and gave her presents.