For seven years afterwards, she worked in the service industry in places such as Eddie Rocket's and Bewley's of Grafton Street, continuing to write songs.
[12] That year, Donal Dineen and Miles O'Reilly showcased her in their seminal YouTube survey of contemporary Irish folk artists, This Ain't No Disco.
She sang her own Factory Girl with Radie Peat of Lankum fame, laying down an a cappella performance that combined the best of trad with intense, minimal production values.
[15] In 2021, O'Neill's cover of Dylan's All the Tired Horses reached a huge mainstream audience when her dark contralto channelled Tommy Shelby's return to his Roma roots in the final episode of Peaky Blinders.
[16] In December 2023, O'Neill performed a rendition of "Fairytale of New York" alongside the Pogues and Glen Hansard at Shane MacGowan's funeral service held at St Mary's of the Rosary Catholic Church, Nenagh, Co Tipperary, Ireland.