Analysis of Nancy

You are a rose, but set with sharpest spine;
You are a pretty bird that pecks at me;
You are a little squirrel on a tree,
Pelting me with the prickly fruit of the pine;
A diamond, torn from a crystal mine,
Not like that milky treasure of the sea,
A smooth, translucent pearl, but skilfully
Carven to cut, and faceted to shine.

If you are flame, it dances and burns blue;
If you are light, it pierces like a star
Intenser than a needlepoint of ice.
The dextrous touch that shaped the soul of you,
Mingled, to mix, and make you what you are,
Magic between the sugar and the spice.