Secondly, Mary did not plot to kill Elizabeth; she plotted to *escape* which as the prisoner of a foreign power she had every right to do. Why is it so wrong for Mary to plot against Elizabeth when Elizabeth was holding her as a prisoner?
Thirdly, Antonia Fraser and Alison Weir demonstrate that Mary played no part in Darnley’s murder and she married Bothwell unwillingly, after he raped her. Elizabeth should have helped Mary instead of having her imprisoned.
Fourthly, Mary was told by one of the gentlemen escorting her to the scaffold that her death would mean that Protestantism would live, whereas if she lived it might mean Protestantism would die. It was THAT statement (which I paraphrase) which told Mary that she was indeed dying because she was a Catholic and a Catholic queen.