Her Butler, Suspicous (Prologue)

Both of her parents were ruthlessly murdered. Left alone in the world, the only person she has is a demon that only wants to devour her soul. Charlotte Elizabeth Phantomhive, daughter of Ciel and Elizabeth Phantomhive has lived a cruel past watching both her parents die. But now that the past has come to haunt her once again, What will she do? Will a certain demon help her along the way?
( i do not own the cover picture, i just edited the eye to be green; all credit goes to the respective owner c:)