Kammala jumla mai zuwa: O'Flanagan ta fara wasan farko a Ireland a shekarar 2012. Daga baya ta wakilci Ireland a Gasar Mata ta EuroHockey Nations ta 2013. A ranar 22 ga Yuli, 2017 a wasan kusa da karshe na gasar kwallon kafa ta mata ta FIH Hockey World League na 2016-17, bayan da Ayeisha McFerran ta yi zunubi a wasan na bakwai da na takwas da aka buga da Indiya, O'Flanagan ya zo a matsayin maye gurbinsa. Da ta fara taɓawa sai ta ceci bugun fanareti na gaba. Ireland sun kasance 1 <unk> 0 a lokacin amma daga bisani suka ci nasara 2 <unk> 1. Matsayi na bakwai na Ireland a gasar a ƙarshe ya gan su sun cancanci zuwa gasar cin kofin duniya ta mata ta 2018. A cikin
2017 Mata EuroHockey Nations Championship, O'Flanagan ita ce mai tsaron gida na farko na Ireland.