@Colby3002 I think that she is working with the psychologist and the other Eiji to make "him disappear. She is in love with Eiji-B and not A. Anyway she is betraying him.
@pkbui I had this exact same thought, I think she doesn’t love the actually Eiji, and likes B so she’s trying to turn him into only B, I had this thought when first reading about the mental hospital