A mother whose teenage daughter died in the Creeslough tragedy has said families have "no answers of any kind".
Four men, three women and three children aged between five and 59 years of age were killed in an explosion at a service station and apartment complex in the north Donegal village on 7 October 2022.
The families of those killed in the Creeslough explosion will meet Taoiseach Micheál Martin later.
They hope to get a commitment for a public inquiry into what happened.
Mr Martin said he will "listen carefully" to the families but did not say whether he would support their call for a public inquiry.
Speaking outside Government Buildings, he said: "This is my first time meeting them formally, and I'm conscious there’s an ongoing investigation under way.
"But I do want to hear what they have to say firsthand, and I will listen carefully to their presentations."
Donna Harper's 14-year-old daughter Leona died in the incident, said: "We are really looking for a strong commitment from the Taoiseach".
Speaking on RTÉ’s Morning Ireland, Ms Harper said Leona played rugby for Letterkenny, really enjoyed school and loved going to her granny’s farm and was very focused on what she wanted out of life.
"That was all taken away from her," she said.
She said a number of the families are travelling and have "very serious questions that need to be answered", adding that the only way "we are going to get them answered is through a public inquiry".
Ms Harper said the former minister for justice Helen McEntee and minister Jim O’Callaghan did not commit to a public inquiry in previous meetings but also "did not rule it out".
"They said they just wanted to wait for the garda criminal investigation to be over, but it was stated at the time by Drew Harris that it can and has been done in this country before, we do know that it has been done in this country before," she said.
Ten people lost their lives in the Creeslough explosion in October 2022
Ms Harper said the garda file has been submitted to the Director of Public Prosecutions and that they are still waiting for the health and safety file to be submitted.
"We are not going to get those answers through a garda criminal investigation", she said, adding that the "only way they are going to get answers through a public inquiry".
She said Creeslough was one of the biggest civilian disasters in the State.
Ms Harper said she and her family are still living on 7 October 2022.
"My 14-year-old daughter only went to visit. She walked into a shop with her friends.
"Our last words that I said to my daughter was that I would ring her tonight, 'love you, ring you tonight’. And her last words to me was ‘love you too mammy’.
"Minutes later, I got a phone call to say my daughter was involved in some kind of an accident," she said, adding that it was her 13-year-old son that got the first call.
Ms Harper said she was told that she needed to make her way to Creeslough.
"I had no idea that the shop had exploded; I had no idea what I was going down to … halfway there, my son got sent a photograph to say his sister was inside," she said.
She said she stood across from the shop for almost 24 hours until Leona was located.
"No parent should ever have to hear the words ‘your daughter is gone’, because she went into a shop and never came home.
"We live with that every day … there are no answers whatsoever. How do you begin to even put a foot forward to even have any kind of closure when there is nothing," she said.
Ms Harper said the Government are supposed to step in and look at what happened when there is a mass loss of life.
"What can they do to make things right, so that this never happens on Irish soil again?" she added.