Cops: "I'm going to tase you!"

[NiceCatch]

I think the scene was clearly about establishing authority. Like when a child does something fairly benign, however it is in clear disrespect to the wishes of the child's parents; the parents need to establish who is in control, and must punish the child adequately.

The woman was being straight up disrespectful. What she needed was a good tasing. And more cowbell, of course.