Board Thread:Lore Discussion/@comment-24247569-20131213161343/@comment-24459775-20140124004913

7.  The most probable conclusion as to why Anastacia is the way she is - She was from Way of White. She became "Undead". Even after becoming "Undead", perhaps she continue to perform blasphemy, i.e. by uttering the names of God, performing prayers, so they cut off her tongue. She somehow managed to obtain some kind of rite of Kindling (not the one performed by the player, perhaps), thus becoming a Firekeeper.

The description for anastacias blood-stained skirt hints at her punishment - "Perhaps its wearer was maimed to prevent escape?" Also take a look at the Dingy Set and the clothes worn by Reah of Thorolund, a member of the Way of White on pilgrimage. Similar? And as the dingy set says, "It is thought to have once been the white robe of a maiden." Perhaps Anastacia was once on pilgrimage but lacked the fortitude and courage of Reah and so was punished by her escort for her weakness.