I haven't seen any accounts (except for rumors like yours) that agreed to give the edited version. What I read, is that they told her to give the edited version, not that she agreed to it. And they told her if she strayed from their version of her speech, they would cut off her mic. Do you have a link to anything that verifies your account that she agreed to give the edited version?
Another post on one of the MANY threads about this topic said that in an interview on the Today Show the girl indicated that she did agree to give the edited speech but then "changed her mind" (Read: decided to lie) and give the original speech.