In March 1912, she was imprisoned in Holloway for four months for “damage,” the smashing the windows of Marshall and Snelgrove’s shop in Oxford Street. In prison, she participated in a hunger strike, was force-fed, and, along with
Mary Ann Hilliard and others, secretly embroidered her name on
The Suffragette Handkerchief right under the wardress's noses. Casey was awarded a
Women's Social and Political Union (WSPU)
Hunger Strike Medal for her imprisonment on 4 March 1912, a date when many women were arrested for a militant campaign of window-breaking. The citation engraved on the bar is 'For Valour,' and the inscription says"PRESENTED BY THE WOMEN'S SOCIAL AND POLITICAL UNION IN RECOGNITION OF A GALLANT ACTION, WHEREBY THROUGH ENDURANCE TO THE LAST EXTREMITY OF HUNGER AND HARDSHIP A GREAT PRINCIPLE OF POLITICAL JUSTICE WAS VINDICATED."The medal ribbons were in the WSPU colours of green white and purple. On 17 March 1913, Casey was arrested under the name “Eleanor Cleary” for “placing noxious substance in a Pillar-box work”. She was released after she paid a fine. In June 1913, Casey and her daughter Bella were supportive of
Kitty Marion's notion that setting fire to the grandstand at a racecourse at
Hurst Park, Hampton Court would be (in reference to
Emily Davison's act of throwing herself under the King's horse at
Epsom races), a 'most appropriate beacon, not only as the usual protest, but in honour of our Comrade's daring deed'. In October 1913, she was arrested under the name “Irene Casey” in Bradford, was sentenced to three months, and went on a hunger strike. She was released under the “Cat and Mouse” Act. She escaped by dressing in men’s attire while her mother, Isabella, dressed as Eileen. She was out for eight months when she was arrested in June 1914 in Nottingham for possession of explosives. She was sentenced to 15 months. == Teaching career ==