Mary-Lou has been working in theatre , film and television since graduating with a first class honours degree in Drama & Theatre Studies and English from University College Cork. Her theatre credits include The Blue Boy as part of the Ulster Bank Dublin Theatre Festival 2011, Hermia in A Midsummer Night's Dream (NYT), Gach Ait Eile (Abbey Theatre) and Vandal (Waterford Youth Arts).
Film productions include Tunnel and the title role in the short film Penny, winner of Best Drama at the Corona Fastnet Short Film Festival 2009. She will feature in Twinkle Toes for Egomotion and Máire an Chlocháin Leith, the Impossible Love in spring 2012. Television appearances are Corp agus Anam, Cinneadh as part of the Siol series on TG4 (directed by Darach Mac Con Iomaire), Ros Na Rún with Adare Productions and also featured in series one and two of the IFTA award-winning series Aifric directed by Paul Mercier.
She also studied Drama and Voice from a young age at the Cork School of Music, where she was an active member of the Youth Theatre. During this time she performed in the award winning play Boat Memory (directed by Regina Crowley and Trina Scott) at the National Theatre, London. She also received funding to develop a theatre project "Life in the Venue" with Clinic Media and with the kind support of Cork City Council. Her most recent stage work includes An Trial with Aisling Ghear and RECORD by Dylan Tighe, performed as part of the Cork Midsummer Festival and in Dublin during the ABSOLUT Fringe Festival 2012. She also performed in Blue Boy (Brokentalkers) at Project Arts Centre, the production went on to play at theatre festivals in Finland, Romania, Germany and Iceland.
Mary-Lou is currently performing the title role in Me, Mollser by Ali White as part of the Abbey Theatre's Community and Education programme.