Twenty-three girls survived the attack.
They include a girl who was stabbed 33 times, and two sisters who were both injured as the elder tried to shield her younger sibling.
Some parents said their daughters had missed out on support from local authorities after officials told them they did not know who their children were.
All said they felt their daughters were being forgotten as their experiences had been erased from the public’s understanding of the attack.
The mother of one of the children said: “There are 23 girls moving around this town, and nobody has any idea who they are.”
“Anonymity is not invisibility,” said the father of another one of the girls.
“We hope people bear them in mind because it’s the absolute least they deserve.”