I have a dog. I don't take him backpacking. He does go camping a lot and he hikes often, but only where he is allowed to go and is always leashed. Those are the rules.
I hate most dog owners I meet on the trail, with a dog in tow -- or usually not in tow or leashed.
Whether or not this lady is right or wrong we don't really know. Perhaps a service dog should require a permit, like a vehicle placard for disabled persons. Or perhaps no special treatment at all. It is a big debate. And aren't there is more important things for us to do, such as get out and go hiking?
Besides, there are greater crimes being committed daily, such as thousands of backpackers stealing condiments from fast food joints.
Oh, those glass houses and rocks!!