While Dad won’t argue with Moose that it was painful and traumatic for all of them to leave Natalie, he at least makes a good show of insisting that it was the right thing to do. He suggests that Natalie deserves to have a life in the world, and at this point, he believes she’ll only get that if she gets help from skilled teachers outside of the family home. The family, in this view, isn’t enough support for Natalie’s particular needs.