What's the tone of "Half-Hanged Mary"?

The tone of this poem is certainly one of bitterness. She
is bitter because they chose to label her a witch for no reason other than she lived a
solitary, shabby life. She was bitter that God allowed her to be so treated. Bitter even
against the women she helped, for they stood and watched her hang without trying to save
her for fear they, too, would be labelled by association with her. She is bitter that
the townspeople never tried to help her survive in her solitary, hard life. Her
bitterness continues when she is cut down and found alive, for before he was labelled a
witch; now people treat her as if she is one. Lastly, she is bitter that she did not die
and must some time suffer a second death. Her second life, she is doomed to be a
mentally deranged woman that everyone avoids.