The devastated sister of a New Zealand woman who died after falling from a Gold Coast high-rise has made an emotional appeal for information about her death.

Marreza Wright’s older sister Warriena died after falling from the balcony of the Surfers Paradise unit in the early hours of Friday morning.

The apartment was the home of Gable Tostee, who reportedly met Ms Wright on dating app Tinder.

Police questioned Mr Tostee last week, but they say he “exercised his right to silence”.

A tearful and shaking Marreza appealed for information about her big sister’s death on Thursday, saying her sister Warriena was like a mother to her.

“Rie was the most important person in my world,” she told reporters.

Warriena Tagpuno Wright fell to her death from the balcony of a high-rise last Friday.

“She was a very beautiful, cheerful, intelligent person who not only was my sister, she was my best friend

“It’s hard for me facing the loss of my sister without knowing what happened in the last hours of her life.

“It’s very hard for me to talk about her. She would really hate all this attention about her.”

Ms Wright was in Australia for the wedding of a friend, a former colleague at a photo developer.

Marreza said the family just wanted information.

“I just really want anything. It’s really hard for us,” she said.

Detective Superintendent Dave Hutchinson said police were seeking any assistance from anyone who had any information.

Det Supt Hutchison was asked if it was frustrating that Gable Tostee, who lived in the apartment from where Ms Wright had fallen, has been making comments about the case on social media, but had not spoken to police.

“No, he’s exercised his right to silence, he’s entitled to do that,” he told reporters.

“It’s our responsibility just to continue the investigation.”