Hi Grimace and

,
Unfortunately the clock starts ticking when she gets her PR. It almost tells you she could apply for citizenship after living legally in NZ for 5 years which your partner may or may not have been, but then goes on to remind us that being a PR holder comes into the equation.
New citizenship requirements
New citizenship requirements came into effect in April 2005. As a result, you may need to have lived in legally in New Zealand for five years (formerly three years) before applying for citizenship, depending on when you were granted residence. For official New Zealand Government information on citizenship requirements, visit the Department of Internal Affairs website.
You can read up about citizenship
here.