After seeing Philomena, I decided to watch The Magdalene Sisters, which is a much more brutal - perhaps more honest - look at the Magdalen laundries run by Ireland's Catholic church. The documentary "Sex In A Cold Climate," which is the only special feature on the DVD, is about four victims of these laundries who were the inspiration for the three main characters in the film. Their personal stories about their time in the laundries are much more horrifying than anything in the film itself.
I don't know any of the Irish actresses, but Geraldine McEwen, whom I've loved as Lucia in the Mapp/Lucia PBS adaptations, is terrifying as the bullying mother superior.