The two money-laundering counts relate to Hurring allegedly setting up a "player'' account at a casino in Macau, where two deposits were made totalling more than $340,000, money that could be converted into chips for gambling or to pay for services including accommodation and food.
Hurring was interviewed by police and the interview was played to the jury today.
Hurring said she did not have access to any of Gao's accounts.
She said she was at her home in Rotorua one night when Gao started "yahooing'' .
"I was trying to talk to him. . . He was acting absolutely crazy.''
Hurring said when she looked at Gao's laptop she saw "lots of zeroes''.
"It didn't seem real. . . I kept asking what has happened. He was like on another planet.''
The next day they went to the service station and Gao was telling people he had won Lotto, Hurring said.
They went to Auckland and Gao was being secretive. Gao said he was going to China and Hurring begged to go with him.
Gao left the country and Hurring did too with her daughter a few days later.
She told police she met up with Gao in Macau and thought she was having a holiday.
Hurring said the first she knew about the mistake Westpac had made was when she saw television coverage about it.
The jury is expected to retire to consider its verdicts tomorrow.