sdav: I want to know what they allege she did on her sick leave which lead to the abuse claim from Air NZ. I think this makes a big difference because if they allege she went to a movie with her sick relative and want bank statements to prove it then no, going to a movie is not that unreasonable. If they claim she flew to Wellington for the weekend for a food festival with her allegedly sick relative then I think that's fair she fronts up with the records as that is an unreasonable thing to do.
If a relative is sick enough you have to have time off work to care for them, you really shouldn't be taking them out to the movies imo...