Why does Anne believe she feels the strong pull of nature?

From the text:

Is it because I haven't been outdoors for so long that I've become so smitten with nature? I remember a time when a magnificent blue sky, chirping birds, moonlight and budding blossoms wouldn't have captivated me. Things have changed since I came here.

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Many people think nature is beautiful, many people sleep from time to time under the starry sky, and many people in hospitals and prisons long for the day when they'll be free to enjoy what nature has to offer. But few are as isolated and cut off as we are from dle joys of nature, which can be shared by rich and poor alike. It's not just my imagination -- looking at idle sky, idle clouds, idle moon and idle stars really does make me feel calm and hopeful. It's much better medicine than valerian or bromide. Nature makes me feel humble and ready to face every blow with courage!