There will, at some distant point in the future, be a Twilight Themes post on Bella and her falling and the many things wrong with it. So far we have:
1. Appropriation. It's an example of an author writing a disability onto a character for "adorable" points without treating that disability seriously or sensitively.
2. Attractive Weakness. It's an example of how weakness is considered an attractive feature in a woman. See where Bella notes that she's desirable because the men want someone to protect.
3. Informed Flaw. She may conform to every conventional standard of beauty, and she may be crackerjack at school without having to study, but she falls down a lot so she's not a Mary Sue!
Anything else you would like tackled in a Falling Down post about Bella?