Of course that's taking an interest and, even if it is the ridiculous law, why on earth they couldn't have picked up the phone and called the diplomat and told her to face up to her responsibilities would surely have been in the best interests of diplomacy.
They're now asking the European Union, who we're hoping to do a free trade deal with, to waive immunity so the diplomat can face up to her responsibilities. Chances are they wouldn't have been asked for it if attention wasn't drawn to it. The diplomats are considering it, let's hope they take the diplomatic route.
And while we're on diplomacy, why can't Jacinda Ardern get in step with our allies and support, rather than "utterly accept" the air strikes on Syrian chemical weapons factories? She's the one blind eye of the Five Eyes countries we belong to and who we share intelligence with and who all vehemently support the strikes. Ardern is no doubt choosing her words on the advice of Foreign Affairs.
To expect a multilateral response through the United Nations, which she thinks we should hang out for, is about as likely as Winston Peters entering a seminary.