Here you are very very wrong and have simply failed to pay attention. A lot of my interlocutors have been calling for shooting first and asking questions later.
... She refused to answer questions and fled.
This is a distortion. She simply left, and did not go very far. The information booth attendant is not a security person, and has no authority to question or detain. Simpson was perfectly within her rights to turn around and leave when she was asked what was "on her chest," which might be interpreted to be a rude question. Here is what the article said further:
A Massachusetts Port Authority staffer manning an information booth in the terminal became suspicious when Simpson - wearing the device - approached to ask about an incoming flight, Pare said. Simpson then walked outside, and the staffer notified a nearby trooper...The trooper, joined by others with submachine guns, confronted her in front of the terminal...."She was immediately told to stop, to raise her hands and not to make any movement, so we could observe all her movements to see if she was trying to trip any type of device," Pare said. "Had she not followed the protocol, we might have used deadly force."
She did not flee. She cooperated apparently, and it turned out she did not have any device she could detonate.
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.