Even though this is for autism awareness the same goes for apraxia. Don't ever assume that a person who is non-verbal can't hear you. Likely, they can and they may even be far more intelligent than you. Think before you speak.
Be that child's voice.if you encounter this type of thinking do the same thing.find a teacher that can make things happen! There are great teachers out there with a ton of empathy.you just need to find him/her!