"If we don't win anything I'm not too worried because I know some of the money is going to charitable organisations to help other people in need."
Mrs Tranter-Watson said if they won the big prize, she and her husband would knock down the house they had lived in for 12 years and rebuild, and it would have to include an art studio, and her daughter had talked about leaving work and starting a business.
"It's definitely a lot of money and it would really worry me having that amount to spend. It could be really easy to spend up large on things you don't really need.
"I think it would be really important to take some financial advice and think hard before splashing out unwisely."
Despite Powerball jackpotting, AJ's Lotto was not "crazy busy" yesterday, store staff said.
Five lucky women and five men have become instant multimillionaires as a result of Powerball and Big Wednesday this year, winning an average prize of $11.94 million each.
"It doesn't matter where you live, what your gender is, whether you're married or single, every player has just as much a chance of winning as any of this year's biggest winners," said Emilia Mazur, head of Lotto's corporate communications.
"We're looking forward to seeing what happens this weekend ... we could be popping champagne and handing a lucky player $16 million on Monday."