Morehu consistently denied being involved in a race when questioned by Detective Craig Rawlinson, who put it to her that she led the convoy from her Orion Drive home, where they had been drinking. But she later admitted to speeding after several witnesses said they saw three cars driving at high-speed and tail-gating one another around the time of the accident.
When asked why she was driving so fast, she said, "My explanation is getting there the faster the better, but it was not a race, I can assure you that."
She was then asked to explain the difference between speeding and a race. "There's no difference, I suppose."
Morehu, driving outside her restricted licence conditions, said Reihana did not want to drive because he had been drinking.
"He didn't really like drinking and driving ... He told Haki [Davey] he didn't want to drive before he gave him the keys."
She felt guilty about what had happened and did not know that her two daughters had got into the car with Reihana.
"I blame myself for all of that. I didn't know they had got into the car ... You know what? I do want to be punished for that, for losing my kids. If I didn't go anywhere they would still be here today."
Senior Constable Christopher Hills, who analysed the crash, said it was unlikely the girls would have survived even if they had been wearing seatbelts.
The Crown is expected to wrap up its case today.