It's relatively easy to lock down a small isolated country like NZ compared to Australia. But due credit to her for having the guts to do so. Now on to the hard part, rebuilding a decimated economy.
On the other points: Yes definitely - credit where credit is due.
Credit previous labour and National governments for the low debt and unemployment,
Credit the current Labour government for borrowing to fund super, and
Labour party promise on migration: https://www.labour.org.nz/migration (oops this page doesn't exist)