Dirrane moved to Dublin in 1919 to train in
St Ultan's Hospital as a nurse. She was still under surveillance, being arrested alongside her employer
Claude Chavasse when she was working as a nurse in his house. She was held in Dublin Bridewell for two days before being transferred to
Mountjoy. In the time of her imprisonment, she was not charged or put on trial. Her refusal to speak English angered the guards, culminating in her going on hunger strike for a number of days in 1920 until she was released. She took part in the Cumann na mBan vigil outside of Mountjoy in November 1920, when
Kevin Barry was hanged. She worked in
Richard Mulcahy's house for two years, before emigrating to the
United States in 1927 to continue her career as a nurse. She worked in
Boston where she was an active member of the Irish emigrant community alongside former neighbours from the Aran Islands and some relatives. She worked in a hotel for a time, but returned to nursing after her marriage to Edward 'Ned' Dirrane in November 1932 in the Jamaica Plain section of Boston. Ned was a labourer in Boston, was also from Inishmore, died from heart failure in 1940. Dirrane continued her career nursing in hospitals and as a district nurse. On 13 May 1940, she naturalised as US citizen. During
World War II, she worked as a nurse in a munitions factory, and at a US Army Air Forces bomber base in Mississippi. She canvassed for
John F. Kennedy in the Irish community in South Boston when he ran for president in 1960.
Jean Kennedy Smith visited Dirrane in 1997 in Galway to acknowledge her contribution. Dirrane also met Senator
Edward Kennedy. ==Later life==