Ricki Nash, Cheryl's brother, said he felt total frustration about the way the review had been handled, which he understood was meant to be a detailed, full review of the case.
There are no words, just nothing, he said of the decision not to formally interview the potential eyewitnesses. Our family can't move forward without the help of the police.
The three potential eyewitnesses came forward after the BBC aired the Fairy Meadow true crime podcast in 2022, which has since been downloaded five million times.
One man, who asked to keep his identity private, said he had seen a teenage boy carrying away a small child from changing rooms beside the beach on the day Cheryl disappeared.
The man said he had a brief chat over the phone with NSW Police after telling the BBC about what he saw, but did not hear from the force again.
Damian Loone, a retired detective who worked on Cheryl's case, said he believed the man's testimony was very credible.
In 2017, a man in his 60s was charged with Cheryl's abduction and murder after officers discovered a confession made to police by a teenage boy in 1971. A judge later ruled the confession could not be presented as trial evidence.
The defendant - known only by his police codename Mercury because he was a minor at the time of the alleged offences - was freed in 2019 and all charges, which he denied, were dropped.
A petition asking the state parliament to set up an inquiry into missing persons investigations overseen by NSW Police, such as Cheryl's, attracted more than 10,000 signatures this summer.
NSW Police said all the information it received, including potential eyewitness accounts from the BBC, was properly assessed, stating it is not the case that everyone who contacted them would be interviewed.
In 2020, 50 years after Cheryl disappeared, NSW Police offered a reward of one million Australian dollars to anybody who had information that led to a successful conviction.
Ricki told us: You offer a million dollar reward, people come forward, you don't speak to them. Why offer the reward?