Ayten Bicer felt her 12-year-old daughter slip from her hands and disappear as a ferry capsized off northern Cyprus on Sunday, killing at least eight people.
Her daughter Miray, and six-year-old son Mehmet Asaf, were among 20 people still missing on Monday as search teams looked for survivors in waters more than 500 metres (1,640 feet) deep.
"She was saying, 'Don't let go'. And I didn't let go of my daughter. I swear, I didn't let her go," Ayten Bicer sobbed.
A suitcase fell on top of her, forcing the girl from her grasp. The mother caught hold of the daughter's foot, but her shoes, coated in engine oil from the overturned vessel, slipped through her hands.
The double-hulled ferry with 267 aboard took in water and flipped over on Sunday just off the port city of Kyrenia, leaving survivors clinging to the overturned hull. They were rescued by passing vessels and the coastguard authorities.
However, 20 people were still unaccounted for, including the Bicer siblings, in Cyprus for a holiday.
Separate accounts said the wide-bodied vessel jolted violently before slamming on to the sea surface with part of its bow bursting open on impact. Severe storms hit Cyprus on Saturday and the seas were still rough on Sunday, when the disaster occurred.
Debris remained scattered across the water on Monday, including a black wheelie suitcase bobbing on the surface and a sheet of steel that appeared to have broken away from the ferry.
Authorities revised their figure of missing persons upwards to 20 from 18, after police cross-checked passenger manifests with survivors, officials said.
Turkish Cypriot leader Tufan Erhurman told reporters that a ship would be arriving from Turkey on Tuesday to help with the search for those missing.
"Intervening at the seabed is not possible with the resources we currently have, but from tomorrow that intervention will be possible," he said.
It was unclear if people remained trapped on the vessel, now lying on the seabed.
Footage posted on social media suggested that at the time the ship flipped, there were still people trapped in one of its compartments.
Outside the port in Kyrenia, some of those waiting sat and silently wept, while others scrolled mobile phones for updates.
Ayten Bicer's husband, Hayri, said everything happened suddenly.
"We couldn't intervene. We lost our children. We made a lot of effort but we couldn't save our children. Two of my children are gone. One of my sons is alive. Two of my children are gone. Two of my three children are gone. We left them. We are leaving them on this island as we go," he said.
The ferry ran into trouble shortly after leaving Kyrenia for the Turkish port of Tasucu, in Mersin province, one of several daily sea shuttle links with Turkey.
Nine people connected to the vessel's operations were detained for three days by a court on Monday to assist police inquiries.
The vessel had a valid seaworthiness certificate, authorities said.
Ayten Bicer sat on a deck chair outside the port in Kyrenia on Monday, waiting for updates. Her eyes were swollen shut from crying.
"It was slipping like oil, there was diesel, our feet were slippery. It was slippery everywhere. It was like oil. She slipped out of my hand. Mehmet Asaf held on to his father here," Ayten Bicer said, showing the collar of her T-shirt. "Saying, 'Baba' (Dad)".
(Reporting by Mehmet Emin Caliskan and Ali Kucukgocmen; Writing by Michele Kambas; Editing by Clarence Fernandez, Alex Richardson, Ros Russell and Tomasz Janowski)
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