Well, there is some missunderstanding about her. The last scene brings a lot thoughts, because there "Nerissa" sayng some interesting words that`s shock Bilby and reveal some facts to him.
1) nobody finds Faith`s body + doc`s needed an experiments because he sensed that something is wrong here, so that`s may be Glamour of Faith like Snow head.
2) "Nerissa" said a lot of same words that Faith said in first scene.
So i quees you need to put a word about last scene and give a link to Nerissa
That should be mentioned, and Faith's status should be changed to at least Unkown, though honestly, the mirror all but confirms Nerissa is the one who is actually dead, not her.
Faith status should be unknown or alive