Elizabeth isn't sure; she hasn't met the woman he did, though she does state she has some difficulty tracking her, but can't really explain why. As she tries to keep the tracking, though, she keeps looking off in another direction.<br/><br/>Natalya directs him to keep a safe distance; if she was working with the enemy, who knows what she might actually be capable of. She'll be a fair bit more emphatic, if Terry mentions Elizabeth's odd reactions, as well.