[2][3] The documentary, A Woman Alone with the IRA, prompted a review of Public Prosecution Service conduct in three cases related to Cahill's allegations.
[6] In July 2018 she joined Northern Ireland's Social Democratic and Labour Party,[7] which she left in November 2019 as a result of its decision not to field a candidate in Belfast North during the 2019 United Kingdom general election.
She featured heavily in Arthur MacCaig's 2001 documentary film Song for Ireland, in which she sang 'The Ballad Of Mairéad Farrell' and spoke about the Fleadh (music festival) held annually in the Ardoyne.
All charges were eventually dropped and the accused rapist acquitted after Ms Cahill withdrew her evidence in May 2014, citing her loss of confidence in the conduct of the prosecutions.
[17][18] The former Director of Public Prosecutions (DPP) for England and Wales, Keir Starmer, was appointed to conduct a review of the Cahill cases.
In September 2018 the Northern Ireland Police Ombudsman released a statement saying its report held that in 2000, intelligence received by CID and Special Branch was that 'Martin Morris was abusing children and the IRA were investigating it.'
The Chief Constable George Hamilton issued a public apology to Cahill, and the other two victims, as did Sinn Féin leader Mary Lou McDonald.
Cahill was in 2010 a member (and National Secretary) of Republican Network for Unity (RNU), an anti-policing political pressure group.
Cahill secured the party's nomination unopposed and won the election in November 2015 on the first count, with 122 first preferences out of 188 valid votes from Oireachtas members.
Cahill, along with the Northern Ireland Human Rights Commission, sued the Secretary of State and the NIO, which resulted in a settlement in January 2021.
[31] She has also written for Fortnight and The Spectator magazines also regularly appears as a commentator on radio and television, frequently on the BBC Nolan Show.