The US are treating the stupid girl exactly as she deserves.
There is absolutely nothing clever, funny, vaguely amusing about claiming to have a bomb or gun in your bag. Every single claim has to be taken seriously, duty of care and common sense, which wastes the valuable time of officers who could be needed elsewhere. Terminals get evacuated, flights delayed. People miss meetings, flight connections etc because some berk comes out with a stupid joke that the security staff have heard many times before and have to take seriously.
All you fantastic observers of human behaviour who can tell from this side of the Atlantic, via television pictures, that she is 'just a silly girl' should give up your day jobs and get involved in the security business straight away because you are light years ahead of everyone else.
3 times she stated she had a bomb!!! Given every opportunity to apologise and eat humble pie she continued to be crass and repeat the claim. Serves her right if she has to stay in jail for a couple of years.
Don't waste your sympathy on her she doesn't deserve it.