The line "And soar on high among the blest" means that she wants to be one of God's angels in heaven. :)
I am 60% positive that the answer is A. gust of wind but not 100% so hope you get this right :)
<span>Answers may vary, but might include references to "old earth-cave," "dark dales," "sharp hedges" and "overgrown briars." Joyless</span>