The death toll has risen to 18 in the collapse of Champlain Towers South in Surfside, Florida Officials said the victims included two children, aged four and 10, whose names have not been released 'The loss of our children is too great to bear,' said Miami-Dade Mayor Daniella Levine Cava on Wednesday when she confirmed the update Meanwhile, rescuers said they spoke to a woman who was pleading for help, but she died before they could reach her The identities of the latest victims have not yet been released Hilda Noriega, 92, was named as the 12th victim Wednesday Noriega, who lived in Apt. 602 in the 12-story tower, was the mother of North Bay Village Police Chief Carlos Noriega and was discovered Tuesday