Question

What are the 'fair works of nature' that the poet refers to?

Answer 1

Here 'her' refers to the Nature itself. Altogether the lines mean that the soul of the poet connects with the Nature in regards of the beautiful(fair) work that Nature has done.

Answer 2

Explanation:

here her refer to the nature the line mean that the poet says tha all the condition occur now is just because of human being human are responsible for it.