In the latest decision, the Parole Board notes his sentence end-date is June 2027, and says Ratana now accepts and acknowledges his offending and wants to get treatment.
"In terms of his admission," the decision says, "he says that over the time he has been in prison he has just come to accept his offending. He acknowledged the damage he has caused."
A previous psychological assessment, in early 2019, had been that Ratana was a high risk of sexual and violent reoffending if released, and a moderate risk of general reoffending.
In the circumstances, the Board says, Ratana is "untreated", does not have a release plan and parole was declined. It will be reconsidered early next year.
He had had an "extensive" history of offending dating back six years before the killing, but nothing for violent offending other than resisting arrest.
At the time of the tragedy, Ratana had come from his home town Whanganui to live in Napier with the mother and child. The death happened while the mother was at work.