That's her laugh.

Don't you hear it ?" Dinah's laugh, clear and ringing, came to them on the still air.

Rose's slim figure stiffened very slightly, barely perceptibly, at the sound.
"Sir Eustace has forgotten his engagement," she said icily.

"Yes, Captain Brent, I will come with you." "Good business!" he said heartily.

"It's a glorious night.