The Mysteries of Miss Dickinson

On the Daddy-long-legs post, mary_j_59 brought up the perplexing poem that the heroine has to analyze in class. I can't make heads or tales of it - does anyone else have a clue?

I asked no other thing,
No other was denied.
I offered Being for it;
The mighty merchant smiled.

Brazil? He twirled a button
Without a glance my way:
But, madam, is there nothing else
That we can show today?

- Emily Dickinson

Googling it, there's some confusion whether the fourth line should end 'smiled' or 'sneered.' It seems to me pointless to try and pin down a canonical version of one of Dickinson's poems, which all seem to exist as uncollapsed wave functions - given that she edited them and rewrote them at will, and stopped only when death stopped for her.

Anyway, neither word clarifies the meaning, so it doesn't so much matter.