Kate Beaton comic on the topic of the murder of Jean-Paul Marat (1743-1793), an important figure in the French Revolution. Marat had a really bad medical condition which kept him in the bath. The woman’s name is Charlotte Corday. She was motivated out of revulsion for the September Massacres and the Reign of Terror as a whole (which Marat played a role in) and thought the country was basically going to hell.
(I’m not 100% sure but I think that a loved one of hers died due to something that Marat wrote, he wrote some pretty inflammatory things.)