"They talked me into it, saying I could join the Navy as an education officer. I sent my CV in, filled the forms out, and then got a letter saying I was accepted. I thought, 'Heck, I better get off the couch and do some running,' so at 5.30 every morning I was running endless laps around Kaitaia College."
She was proud of her fitness, which she attributed to preparation and being "a bit of a hard girl from the Far North."
Sub-Lieutenant Tailby has also completed the five-month Junior Officer Common Training course, which took five weeks longer than usual thanks to the Covid-19 lockdown.
"And people were very much younger than me… you need to go into this with an open mind," she said.
"Things won't always go as expected, but embrace the challenge, and go back to basics. Treat others as you wish to be treated."
Initially she was required to salute her son, and Mat had found it amusing that all the things their son learnt from the Navy that used to annoy her were now ingrained in her. Another son has applied to join the Navy next year.
"I get bored really easily, and have to be challenged," she added.
"At 45 years old I've raised four kids into decent human beings. Where does it say in the rulebook I have to sit back and watch TV? Life is too short for that."