The coach company told The Daily Post last week they did not find out about Daniel being left on the bus until a member of the public came forward with the information three days later.
After a conference between the Ministry of Education, the coach company, Daniel's Kawerau South School principal and a teacher from the school, a spokeswoman from the coach company visited the home of his parents, Toni and Pita Ramanui, to tell them what had happened.
The Kawerau Coaches spokeswoman said she apologised on behalf of the bus driver, who resigned before the filming of the Campbell Live show.
Now, nearly three weeks after the incident, Mrs Ramanui said her son still had not fully recovered from his ordeal.
"It will take him a while to get back to where he was. It took him four or five months when he started school to get used to that, now we're back again,'' she said.
"He's pretty much still the same now [from when he was left on the bus].''
Mrs Ramanui said although Daniel had serious disabilities, it did not make him any less prone to hurt. "We're trying to get him to understand nothing is going to happen to him now. Just because he has a disability, doesn't mean he's not aware of what happened.
"He has feelings and emotions, that's what everyone needs to understand. He's just like everyone else, he just needs more help.''
Although the bus driver resigned, she faced no other repercussions, something that Mrs Ramanui felt was unfair.
Mrs Ramanui said on Campbell Live police were not considering charges against the driver as "there was no basis for inquiry without criminal intent''.
"She's not even going to be charged or anything. It's not a criminal offence, yet if I had [left Daniel in a vehicle], I would have been locked up.
"That's why it's frustrating, the only reason anything is getting done is because we spoke out. If we hadn't, it would have just got brushed under the table.''
The ministry expects to complete its investigations sometime this week.
