While she may have done everything he asked, she copped an at ude which definitely tested him, escalated the situation, and ultimately led to her bogus arrest.
I wish I knew why we don't hold cops accountable, all I know is that it seems the after the investigation the cop is usually cleared of any wrong doing pretty much every single time (this case may have a different outcome). Having that been said, if you know that cops can pretty much kill at will why would you go out of your way to give them a reason to put a bullet in your ass. By going out of your way I mean saying anything other than yes/no officer.
Sure your pride might take a hit, but you can de escalate the situation by just being courteous.
I hate that it's the way it is, but that is the current situation of our country.