We are one but not the same

As I look around I recognize nothing but her. My twin sister who died several years ago. "Would you like to become one again sister" she says in a very cold and calculating voice. I can't see her eyes they are hidden by her hazel hair. Oh why did you die I think in my head. Why does she keep haunting me in every dream I dream. Chills are constantly running up my spine. "Sarah" I say finally responding to her. "Hmm" she says lifting one of her fear to take a mechanical step towards me. "What do you want from me" I say keeping my fists clenched but I can feel cold sweat on my forehead. She has never walked towards me before. My heart is rapidly beating and my body is feeling colder each time she takes a step towards me in this ice cold world. I notice that we are both standing in water. "Did you ever miss me Cara" she says with a wicked smile I still can't see her eyes. "How could I miss you when even after you died you still keep me awake" I respond. All of a sudden she stops walking and her smile disappears. She looks down her skinny arms hang down loosely. Being complete opposites in looks and personalities that's the kind of twins we were. She ten straightens herself out. " Hey sister can you repeat the song we used to sing when we were little" she says. For some reason I sighed and said "sure". My sister was still acting like herself I felt myself start to relax when I heard her human request, that's when we started. "Hello stranger. Do you want to hear our happy and sad song. Then hear us out. We are happy and sad. We are good and bad. We are mature and immature. We both love and hate. We are one and separate. If one of us is lost then the other one is too. So sad so sad if one of us goes I wonder what the other one will do. Will you die too. Hahaha we are one yet not the same". After the song finished my sister ran towards me and said. "Sister you are mistaken I did not die you did and I am your killer". That when I realize I've been rptrapoed inside my sister.
.