She is participating in an attack on a government minister's London home.
Julius Karekin, who exiting the MP's house, finds Elizabeth's card.
Julius Karekin (born 1875) is a wealthy social climber and a very knowledgeable and talented stockbroker of Armenian descent.
He saves Elizabeth from imprisonment by mentioning her family and connections to the police and at Court gets her off with a 40 shilling fine, which he then pays.
This makes Elizabeth feel incredibly guilty, and with the help of Karekin she gets Rose freed after the discovery they are being force fed.