She was not sure the magic did its function, but she decided to wait for a while to see if Morpheus would appear after hearing the whistle.
Several minutes passed by without any signs of his arrival. It made her question whether the whistle worked or if Morpheus was unable to come because he was preoccupied with other things.
"He said he'll come anytime as long as I call. Maybe he's busy?" She decided to wait a bit more. After some time, she fiddled with the bird-shaped whistle. "What if I didn't do it right? I should try blowing harder."
She was about to put that whistle back to her lips—
"Don't blow it again or you will damage my eardrums!" she heard the familiar deep voice, and even before she saw the man, she felt the wind swirling around the balcony due to that pair of majestic gray wings.
She turned around to look where Morpheus had landed. She smiled brightly, finding his helpless expression funny. "Ah, so it really worked."