Well, the FL authorities seem to think the 2 girls who created the account violated a FL law. Perhaps they would be convicted on that, and then an appeal to the Supreme Court to declare the law unconstitutional?
There are throngs of attorneys that are looking for the ideal case(s) to test the constitutionality of these cyberstalking laws. I don't know if this would be an ideal case, but it does present some interesting questions and the fact that the defendants are minor children also adds an interesting dimension.
In any event, unless this DA wants to get some national camera time (which is always a possibility), like most criminal complaints, it's probably more likely that this will end in a plea agreement rather than a jury trial.