Yeah, that's a freaky line. While I think the idea was to reinforce that Edward is the Hypnotherapist with a parallel line ("Open your eyes, Nicholas"), what it means in the narrative itself is that Edward is going to shoot her, but he wants her to see it coming. It's like, shooting someone in the back in cowardly; look them in the eyes and do it. Of course, shooting an unarmed woman (or man, for that matter) doesn't exactly make you a hero.