Former Magdalen Asylum inmate, Mary-Jo McDonagh, told director and writer Peter Mullan that the reality of the Magdalene Asylums was much worse than depicted in the film.
When Margaret's brother shows up to take his sister home, he not only knows his way around the facility, but knows exactly which room everyone is in, despite having never set foot in the place in some six years.
Sister Bridget: For many years, more years than I care to remember, I have had a secret love. In fact not just one, but dozens. Since I have been thirteen years old I have been in love... with the films.