She didn't call Nurse Jenny, she sent her a facebook message, and it would have been political point scoring if Jacinda brought it up but the question was asked of her.
Lets hope she do's the same for NZ ICU nurses at the next pay round.
Of course she's not going to do that but whenever an ICU nurse (or anytone else) does something to get her attention I'm sure she will. She thanks ICU staff and essential workers regularly and you would have to admit that saving the life of a world leader is noteworthy. I also wouldn't be surprised that as soon as it's safe she'll visit the most impacted hospitals in NZ to say thank you in person. A face book message saying thanks for saving the life of someone that Jacinda knows and is quite important right now is a funny thing to try and politicise.