She sees her starting to fall through the water and quickly swims over, grabbing her around her waist and starting to swim up, struggling but managing just the same, knowing that she HAS to save Delilah
They surface and Pearl starts swimming to shore with Delilah, struggling against the waves that hit her and spray her with seafoam, trying her best to see through the storm, fighting everything just to keep Delilah alive. Finally, after hours of what feels like torture, she reaches the shore and climbs onto it, laying Delilah down