(In the Death Note Anime) She becomes literally, a "lost Cause." A retired FBI Agent who appears after learning of her fiancee's death.
She is able to nearly prove Raito(Light) as being Kira, but ultimately gives away her name, and becomes victim to the Death Note.
Random person 2: Naomi Misora, She's awesome!
Random Person 1: I personally like Beyond Birthday and L better, but She's my third favorite!