She fled. She did not answer the question about the device. When questioned about it -- she left. In other words, she fled.
"She cooperated"? LOL. Only after she was cornered and had several guns pointed at her head. You could claim she cooperated if she had answered the question about her improvised electronic device back when she was still in the airport, but she didn't.
And she is not charged with having a detonable device -- she is charged with having a hoax device -- the very definition of which requires that it not be detonable.
Are you really this dense - well either you are guilty, or we have this other law making you guilty. If your flashing light shoe turns out not to be a bomb, well then it is a hoax bomb. If your laptop is not a bomb it is a hoax bomb.
Flee - def: To hurriedly run away from or escape from;To pass swiftly away; vanish
Leave - def: To go out of or away from
Not the same thing at all, at least not to literate speakers of the English language. We use differing words when we are trying to express differing ideas, which is why we have different words for these things. Subtle, I know.
She left. She did not escape. She was not running away when confronted. She was waiting outside the building.
Furthermore, we can look up the definition of hoax and here is what we get: play upon the credulity of ...so as to bring about belief in or acceptance of what is actually false and often preposterous
It is intentional and deliberate. It isn't a hoax simply because it wasn't real. She had to be trying to get people to believe she had a bomb, but clearly she wasn't trying to get anyone to believe she had a bomb. She didn't say boom, or I have a bomb, or give me all the Milky Ways or I blow this place to smithereens. She simply left the building and waited outside.