Isn't this a family education movie?
No matter how old you are, in the eyes of your father you are still a child. Michelle is a girl, a child, a princess, but she can't think of a woman.
The father forbids the "daughter" to leave, warning her that the outside world is dangerous. The "daughter" never believed in her father's words, then she trusted and then doubted her father's words. In the end, she went to the "outside world". It was indeed dangerous, but she had the ability to deal with it, not only that, but also to help other people.
It feels a little more straightforward.
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