A cop doesn’t know you from shinola. You can be the nicest person on Earth and still have a warrant, have a body in the car, drugs (especially Texas) be high. When an officer gives you an order, you do it. Federal Law says so.
He also took a ridiculous amount of time to even give her the ticket. Then he said with attitude, “Is something wrong?” She said, “I’m waiting for you, it’s your job...”