I suspect much of the bile directed at her is emanating from the belief that arrogant TV stars deserve bad things to happen to them. That she is getting her "comeuppance" for being a celebrity.
I don't know her and i've never watched "Law and Order", so I don't have any reason to particularly like or dislike her.
I don't know if she made a serious mistake or not. I would like to hear more about the specifics of her circumstances.
Most people I know who live in the country let their dogs roam freely. I don't know if she lives in the country or in the city, so I don't know how unreasonable it was for her dog to be outside.
You would be right.
The operative word that you selected is "Arrogant",
Arrogance affects everything about the person who bathes in it, including their decisions regarding their responsibility toward others, including dogs.
Like I said, The entire problem here is Angie Harmon.