I think once Mya is a therapy dog or an aid ( I think thats what you call them) the superintendent cannot say anything because she serves a purpose. They cannot tell a blind person that thier dog is not allowed in so they cannot tell you that either b/c she is going there for your inlaws therapy

Right?
What a jerk she is being. I would just sneak her in if she makes your inlaws that happy. Happiness is so worth it its the best medicine and being able to see them smile!!