I only know two little snippets.
1. I doubt express class hurts her that much as she flies NZ link and now they are both the same.
2. When AN went down she was returning from Europe and was flying NZ J transtasman (no higher class) when her aircraft was blockaded in Melbourne.
I would think that given the government bailed out and owns a large slice of NZ that she would probably have to fly NZ.
Mark