{hugs dino if hugs are okay} Perhaps you can ask the helper to write something that usually helps calm the dragon. Then while you're in with the T the dragon can read it over and over again until he's calm and understands that the T is only there to help. I'm sorry if this isn't helpful, just an idea that sounded good in my head. I hope that you make progress and the dragon will let everyone heal. It sounds like he may be trying to protect. That was his job for a long time. <3