On Breakfast Collins reiterated that her work was essential and she was entitled to travel to carry out her role.
She said she had been at home in isolation for two weeks, was fully vaccinated, was a meticulous contact tracing app user and that she had not been to any of the listed locations of interest.
The interview became heated as Stewart pressed her further on the decision, with Collins raising her voice and demanding the same questions be asked of the Prime Minister.
She fired up further when Stewart questioned whether she'd had a Covid-19 test before travelling.
"Why is this all about me today?" Collins exclaimed.
"Oh come on Indira this is ridiculous."
The pair proceeded to speak over each other for several minutes - Stewart trying to ask further questions on a range of subjects including the vaccine roll-out and the Pacific community and Collins trying to answer.
At times neither woman could be heard properly.
Collins said criticism of her for travelling was "a political attack".
"Parliament is simply not a 'nice to have'... it's essential in a democracy," she said.
"Ask the Prime Minister, Indira, why she is here every day - why isn't she doing it from home?
"The answer is, it's an important job, and so is the Opposition."
Collins then accused Stewart of "being more interested in talking about me than the vaccines".
And they butted heads further when Stewart asked Collins what she had done to help the Pacific community in terms of the vaccine roll-out.
"You know fully well I am deeply involved in the Pacific community... my husband's Pasifika, I talk to him every day, and also I have contacts in the Pacific community," she said.
The over-talking and raised voices continued in the 11 minute interview before Stewart cut the Opposition leader off.
"I enjoyed that, thank you Indira," Collins said.
However seconds later the frustrated MP was taking to Twitter to post about her annoyance with the interview.
