She was outside the pub they were at an looked around she knew some people went back to the ship for the night but she just stayed outside wondering what Delta was doing, she realized she had never told her her name.
That's when she hears Delta's voice, very faintly on the breeze. Once again, she's not-trying to lure anyone in or anything like that, it's not sickly sweet-she has a beautiful voice, as all sirens do, but she's just-singing. No more no less.
"Fair girl..~your eyes..they haunt my soul..~as the moon haunts the night..~"