How did Justine die?

Justine was executed. She was hung on the scaffold.

And on the morrow Justine died. Elizabeth's heart-rending eloquence failed to move the judges from their settled conviction in the criminality of the saintly sufferer. My passionate and indignant appeals were lost upon them. And when I received their cold answers and heard the harsh, unfeeling reasoning of these men, my purposed avowal died away on my lips. Thus I might proclaim myself a madman, but not revoke the sentence passed upon my wretched victim. She perished on the scaffold as a murderess!