Gráinne trained at Oxford School of Drama and was a member of the National Youth Theatre.
Theatre credits include: Jenny/Woman in The Dance of Death (UK Tour), Billie in Baby What Blessings (VAULT Festival, Park Theatre),
Credits whilst training include: Nina in The Seagull, Duchess in The Duchess of Malfi, Rosie in Flatspin, Jen in 39 and Counting.