Oh she is so pushing for Noah having additional needs. Going for ADHD by the sounds of her rant and will be one of those parents who uses it as an excuse for her poor parenting. Maybe what the kid is picking up on is the fact you love his brother far more than you love him. And the violent behaviour, not sitting still is because negative attention from his mum is better than no attention at all. He could have additional needs sure but more likely the frustration stems from an unsecure attachment with a detached mother