She's able to escape the mermaid's grasp and weakly flail towards the exit... but the mermaid quickly blocks her way forward.
With nowhere else to go or do, Sylphiette eventually couldn't hold on anymore. As the water filled her lungs, the last thing that crossed her eyes was the mermaid waving at her as she slowly goes to sleep.
A long, never waking nap at the mermaid's lair.