Board Thread:False Info and Speculative Discussion/@comment-4091815-20150702074727/@comment-4091815-20150702194046

Oh, we have no idea at all who turned Tracy. I never said we did.

We only know that she was a werewolf at the very beginning of the episode. Everything she experienced as "night terrors" was, in actuality, her experiences while transformed.

She didn't actually interact with the Doctors until the end of the episode so whatever was in that injection they gave her did not turn her into a werewolf.