How does the poet describe the moon: (a) at the beginning of the third stanza, and (b) at its end? What causes this change?

In the beginning of the third stanza, the poet says that the whole moon is shining in the open sky in the fresh night. However, at the end of the stanza, she describes the moon as broken into many pieces such as a shattered mirror. This change is caused by the trees that have made their way from her home to outside. Their branches have risen into the sky, blocking the moon, which is why the moon seems to be broken into many pieces. These pieces can be seen flashing at the top of the tallest oak tree.

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