About the dog, this is common. Dogs are often used in therapy. In fact, during my last hospital stay there were regularly two therapy dogs present. They kind of kept things real for me.

Now, as for everything else.... what is it to you how they lead their life? As long as they are performing their job adequately that is all you need to know. None of what you mentioned is anything that would impact her ability. Concentrate instead on what you can take away from the therapy. Try instead to find the positives in it instead of obsessing over what isn't your business or yours to control.