Research backs me up on this... a childs brain is not fully formed until they are about 22 or so. So while they can study hard and be brilliant, the common sense areas that form that can help them decide on things like CAUSE AND EFFECT are sorely lacking. She obviously is not an idiot, just not quite an adult. At least she wasn't stupid enough to not cooperate. Machine guns! Gees... that would scare the spit out of me!
(knowing that my daughter's brain was not fully formed is the one thing that convinced me to allow her to live several times in the last few years. Honor roll student, takes school seriously, but clueless at times... sigh!)
This young lady is exceptionally stupid. Immaturity is one thing, and we all suffer through it. But irresponsible, dangerous, and repugnant behavior is more than immature. Faking a bomb in Boston's airport, where one of the 9/11 flights originated, is breath-takingly arrogant and wreckless.
I hope she gets what she so richly deserves -- time in jail to think long and hard about her antics.