Maybe the cop was concerned she’d burn his hand, who knows?
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That’s possible. While she does have the right to smoke in her car, she was also temporarily detained. I’m guessing that under that circumstance, especially considering her agitation, the officer gave her a legal order.
Or put it in his eye. I had a friend, a vehement smoker, when told “Put that out,” would respond “I’ll put it out in your eye.” They backed off after that.