Keung's granddaughter Elisa Keung said Aunty Dolly, as Keung was affectionately known, was "sunshine in human form".
"I am so grateful to have had 18 years of memories with her by my side.
"I'm sure Aunty Dolly has left many of you with good memories, and I bet she's still singing and smiling in the next life."
Keung was born in Auckland to a Chinese father and Maori mother, but spent much of her childhood in Kaikohe.
Her father and her husband's father came to New Zealand from Canton, China.
Their families knew each other as they grew up in New Zealand, and they got closer after they went to Hawaii to study at Brigham Young University in 1968, according to the book Being Maori-Chinese: Mixed Identities.
Keung studied home economics there for three-and-a-half years, and her husband completed postgraduate studies in chemistry.
They married in Hawaii in 1971, shortly before returning to New Zealand for her husband to begin teaching chemistry at Church College. She didn't teach as she was pregnant at the time.
The Keungs raised five children and have several grandchildren.