could you explain the guidelines? I’m just curious.
I'm not a PT so I don't know all of them, but I have experience with it both in the home and in a school setting, so I can tell you what they're doing wrong.
First, the safety of the child is a priority. A professional PT wouldn't do unsafe things like letting her legs drag and turn backward or letting her head fall. Because her head is so large, they would pay special attention to supporting her neck in order to prevent cervical injury. They also do the therapy on mats, not a rug or blanket on the floor.
Second, They would not allow Atlas in the area where they are working. Their job is to work with the disabled child and siblings (especially small ones) are a distraction not just to the disabled child (not applicable in Luna's case), but to them as well. Other children can also cause safety issues. For instance, Atlas could have stumbled and knocked Luna off the balance ball.
Third, most PTs don't mind parents watching (if it's not a distraction/hindrance to the child) but they rarely allow them to participate the way Robyn does. It's a liability/insurance issue, as well as a safety issue since parents don't have the required training. If a child is severely disabled enough that 2 people are required, they will bring another therapist or assistant with them.
Finally, they would not allow her to film so much. Malpractice insurers do not like the idea of there being video evidence in the event you screw up and are sued.