Mary Jane spent the last year of her life attending to O'Rossa's legacy. She railed against reports suggesting that O'Rossa stated before his death that he bore no hatred or ill-will against the British government. In responding she prefaced her rebuttal with O'Rossa's own words spoken from the dock "I am an Irishman since I was born" and then, in her own words, continued  "that he was the same unconquerable Irishman, breathing the same unalterable desire for the absolute freedom of his country and its separation from England that he breathed in the dock".