I like the whole plot line, but...
Is she stupid? If your NPC/model's pretty face makes people like you, then use that to your advantage! Why doesn't she want to be friendly with Cassiel? Doesn't she need him to finish the game?!
The whole thing about hiding her face seems so damn dumb to me. She is making her job harder. The first meeting with the Count would have gone waaay smoother just by showing her face and not being suspicious with the hood on. (╯°Д °)╯╧╧