I'm sorry for your loss and your pain. Keep sharing your story. It helps to get your feelings out and everytime we tell our story it seems to lighten our hearts.
Regarding your anger and the hateful feelings towards those reponsible for your sister's death; ask yourself if this anger is healthy for you because a lot of the time it is not. It can end up causing diseases/illnesses and also emotional problems, leaving us unable to form healthy relationships. It's all up to you how you want to honor your sister, though her life was very short here on earth....she lived.