The grieving sister of a teen tourist on the Titan submersible 'refused to give up hope' during the four-day search, her mother has revealed.
Daughter Alina, 17, joined her family aboard the Polar Prince on Father's Day and made sure to give her dad and brother boarded the Titan submersible.
Her mother Christine Dawood said the sibling refused to give up hope after the submersible lost contact with the ship.
