Her father is en route to New Zealand from his home in Western Australia.
The source said Tamatoa was a much loved and popular young woman with many friends.
She was a student at the Samala Robinson Academy, training to be a professional makeup artist.
On May 20 she posted photographs of her work on Facebook and said she had passed all three of her recent assessments.
Her peers described her as talented, artistic and said her work was "out of this world".
"I definitely can say you enlightened us all with your beautiful strong vibrant positive soul and personality . . . we will never forget about you Phylicia," said one friend.
"You were such a good mum to your daughter and have inspired us all."
"Such a beautiful soul taken far too soon," said another.
"You had the biggest heart and was always the life of the party. You will be forever missed as you made such a huge impact on so many lives."