Sister Judith is nun that works at St. Gall Hospital. In Chapter 2, Devitt meets her as she gazes out of a window, despondent about God's role in the recent deaths at the hospital. When Devitt plays a tune from a music box, the music helps her renew her faith. She quickly leaves the room. Devitt does not meet her again, but he finds her clothes on the beach.
Judith's name is informed by a technical glitch in the game. Otherwise, her name is not mentioned.