Asked whether the Government was considering its own inquiry, she said: "I'm not going to leap in right now and say that that's necessary.
"But in a way, by virtue of that work, we will certainly probably have an outcome that will be of use and interest to us."
New Zealand's banking regulator the Financial Markets Authority is monitoring the inquiry and is in contact with its Australian counterpart.
In its first lot of hearings last week, the inquiry unearthed a series of scandals.
It led to one resignation, with AMP chief executive Craig Meller quitting on Friday after revelations that his company had charged people for advice they never received.
Earlier in the week, the inquiry heard that advisers from Commonwealth Bank of Australia, the parent of ASB bank, charged dead clients for financial advice — in one case for a decade.
Consumer Affairs Minister Kris Faafoi has said that he did not think that New Zealand had such extremes of behaviour.
"I have not had any advice to suggest that we need a financial services inquiry," he said.
"There's always room for improvement however, so we have work under way including the Financial Services Legislation Amendment Bill and development of a Code of Conduct."
Reserve Bank head Adrian Orr has also said that an investigation was not warranted here.
"The true problem and challenge that is going on in Australia is cultural," he told TVNZ.
"It's not whether the regulator was awake or asleep. It's cultural."
Orr said New Zealand banks were "infinitely better" than their counterparts in Australia.