Ethereal

Elizabeth and her brother Ethan are extraordinary siblings. They each have a sixth sense that becomes more and more evident as they grow older. Neither tell anyone about these strange senses and attempt to suppress them in fear of accepting the abnormality, going so far as not admitting what is happening even to each other. It's because of this that Liz has a complete lack of control over this power of hers and in a moment of chaos the instinctual reaction is triggered.
As the story goes on she'll learn that even the closest of friends can be overwhelmed by the desire for power and conflicts arise as those she was close to her attempt to manipulate her will and harness the unearthly, ethereal power the possesses.