What I can recall is, that she was sent to gather wings.

As soon as she had gathered a pair of wings for herself, she was to fly away, she said, to the country she came from; but where that was, she could give no information.
"She said she had to beg her wings from the butterflies and moths; and wherever she begged, no one refused her.

But she needed a great many of the wings of butterflies and moths to make a pair for her; and so she had to wander about day after day, looking for butterflies, and night after night, looking for moths; and then she begged for their wings.

But the day before, she had come into a part of the forest, she said, where there were multitudes of splendid butterflies flitting about, with wings which were just fit to make the eyes in the shoulders of hers; and she knew she could have as many of them as she liked for the asking; but as soon as she began to beg, there came a great creature right up to her, and threw her down, and walked over her.

When she got up, she saw the wood was full of these beings stalking about, and seeming to have nothing to do with each other.