The Curious Incident of the Dog in the Night-Time 2

I saw a character change when Christopher's father buys Christopher the dog. In the beginning of the story it seemed like he was distant from Christopher and he didn't understand that Christophers mind worked different than his own. He was determined to stop Christopher's investigation of Wellington's death. He doesn't understand that to Christopher dogs are like humans and that Christopher valued Wellington's life as much as he valued his fathers life. Then when Christopher finds the letters he still doesn't understand this and he tell him that he killed Wellington. This is why I think that when Christopher was on his journey to London his father realized that Christopher's mind is different than his. Then he changed When Christopher and his mother return to Swindon he treats Christopher differently. He helps him regain trust by buying him the dog and making the garden with him. This shows he understands Christopher better than before and therefore has changed.