Charlotte Brown is a delusional woman who believed herself to be Anne Frank. She has shown to be very knowledgeable having known to know detailed facts about the war, and the concentration camps. Having accused Dr. Arden of being a former Nazi, and this was latter proven to be true suggesting she herself was in a concentration camp, that Dr. Arden was positioned at. She shows similar physical traits with Anne Frank, having dark hair, and similar eye color; this, and the facts she knew about the war; lead Sister Jude to actually believe that Charlotte was Anne Frank.
I Am Anne Frank: Part 1 - A woman, claiming to be Holocaust victim and diarist Anne Frank, says that she holds a secret about Dr. Arden's past. She insists that he is cruel Auschwitz doctor Hans Gruper. She confronts Arden with a gun lifted from a visiting homicide detective and shoots him in the thigh before discovering the legless and mutated Shelley.
I Am Anne Frank: Part 2 - She holds Arden at gunpoint and demands to speak with Sr. Jude but she is subdued by Frank. A man visits the asylum and explains that she is his wife, Charlotte Brown nee Cohen. He tells the tale of her descent into madness and Sr. Jude, in order to protect her from Arden's retaliation, arranges to discharge her into her husband's care. After she attempts to suffocate their infant son, her husband returns her to the asylum where Dr. Arden recommends a transorbital lobotomy. She is again sent home to her family, docile, happy with her baby, and apparently without memory of her belief she is Anne Frank. On her wall, with various other Holocaust photos and clippings, is a picture of Adolf Hitler and a young Nazi with an incredible likeness to Arden.