Anjelica Huston should've gotten more screen time

I am a big fan of Huston, and that was the only reason i watched the movie (it truned out ot be a good movie). I thought her "a heart's a heart" scene was wonderful, but i think they could have used her character to thicken the plot.
i mean that scene had my friends thinking of her as a possible suspect: uncaring and totally devoted to her job. Could she have been desperate enough to commit murder in order to do her job successfully?
they could've extended the plot by putting in more scenes that made you think of her as the killer, scenes that made her seem coldhearted and made McCaleb suspect her.
a friend of mine also suggested this: she's in love with McCaleb before his transplant. maybe they knew each other before and had an affair or something (my friend is a hopeless romantic, she can't even see a murder movie w/out making up a whole days of our lives episode of it!!). she kills the woman to save his life, is mad that he's ungrateful, so she kills again to make him upset. or she's mad because he ended their affair, so she kills everyone else but she didn't kill the donor (she commits copycat murder to keep him busy).
either way, Anjelica Huston rocks, and i just wish that she could've had more time on the camera.........better luck next time.
to the people complaining about butchering the story: i just kind of butchered it more, sorry. in my defense: if hollywood went so far off, why not go a little further?