An alleged "runaway millionairess" had no idea how $10 million came to be deposited in her partner's bank account, and didn't know it was stolen, a court has heard.

Video evidence of a police interview with Kara Hurring was shown to the Rotorua District Court on Thursday, during her trial on 25 theft charges, three of using a bank card for pecuniary advantage and two of money laundering.

Hurring told police her partner, Hui (Leo) Gao, said he had won Lotto when the money arrived in his account.

Gao fled the country, and Hurring followed him to Hong Kong with her daughter.

She said she was watching television in China when she first learnt that the money was accidentally deposited by Westpac after Gao asked for a $100,000 overdraft.

In the police interview, Hurring denied she was planning to stay in Hong Kong, despite buying a one-way ticket.

"I wouldn't have parked the bloody ute at the airport if I didn't think I wasn't coming back," she said.

The court heard that Gao wired $HK1.5 million ($NZ341,000) from a Hong Kong bank to Wynn's International casino in Macau for Hurring to open a gambling account, but Hurring's lawyer, Simon Lance, said there was no evidence Hurring knew the money had come from Gao.

He asked if the jury thought she had come across as a contrived, masterful liar in the police interview, "or did what she said have an air of reality about it?"

Crown prosecutor Fletcher Pilditch attempted to cast doubt on Hurring's claims, telling the court Gao's account had only $718 in it before the Westpac blunder, and Hurring continued to make withdrawals from that account after Gao left the country.

"It is pretty obvious that account was loaded with money Gao nicked and Hurring knew that," he said.

"She knew where the money had come from and, like Gao, she was trying to get away with it."