Interpretations?

My step daughter's english assignment to interpret this famous Emily Dickinson poem. She called home for some help. Many texts online indicate it is about rage. I saw the relationship between body and soul. I have read it over and over, each time more curious of what exactly was in her mind. Any thoughts?

My Life had stood - a Loaded Gun -
In Corners - till a Day
The Owner passed - identified -
And carried Me away -

And now We roam in Sovereign Woods -
And now We hunt the Doe -
And every time I speak for Him -
The Mountains straight reply -

And do I smile, such cordial light
Upon the Valley glow -
It is as a Vesuvian face
Had let its pleasure through -

And when at Night - Our good Day done -
I guard My Master's Head -
'Tis better than the Eider-Duck's
Deep Pillow - to have shared -

To foe of His - I'm deadly foe -
None stir the second time -
On whom I lay a Yellow Eye -
Or an emphatic Thumb -

Though I than He - may longer live
He longer must - than I -
For I have but the power to kill,
Without--the power to die--

Emily Dickinson