Career
A 2004 biography stated, "Recent works have been preoccupied with notions of portrayal of the self and with deception, dealing with the sublimated desire for self-expression of the artist and the tension between revelation and concealment."
McGuinness married her long-time boyfriend Cillian Murphy in 2004, with whom she has two sons, Malachy born in December 2005 and Aran born in July 2007. She is the niece of Fianna Fáil Party politician John Jay McGuinness. She has made several short films, This is between us (2011), Charlie"s Place (2012) and Procession (2012).