Christchurch-born Paul Weeks was among the 239 passengers on board the flight when it vanished in March.
His wife said she and her two young sons, Jack 1, and Lincoln, 3, were still struggling and they are no closer to getting any answers from Malaysian authorities.
"We still want the truth, nothing much has changed since day one. Any questions that I have asked they haven't answered, they haven't spoken to me," she said.
"It's unbelievable, on top of everything we're already going through it's just a shocker."
Danica Weeks and the families of other missing passengers are now supporting a crowd-funding campaign to uncover what happened to the missing boeing.
The campaign is offering $3.22 million for whistleblower information to uncover information they believe is being withheld by by authorities.