Nobody is talking about "legal" anything. Everyone knows the three "legal" questions stores can ask, so please could we do without the links.
If the woman wasn't looking for trouble and her dog was in fact a SD then she could have shown proof as a matter of courtesy.
Sounds to me like she was on some kind of bandwagon to attract attention from what I read.
Our dogs have a black and red tag so it's evident to all that they are in fact service dogs.
I would never attract attention to myself the way this woman did, I would have pulled out my ID.
I always am interested in both sides of a story, the one sided ones always leave questions in my mind.
This story sounded fishy and I guess it was. My opinion.