Rider Of The Pale Horse

Something has gone wrong, The worlds future has gone dark. The Four Horsemen, in charge of the apocolypse fall into panic. The world is not supposed to end yet, but the current road leads to nothing. Death and his brothers must resort to a Prophecy that was never meant to be, one foretelling the New-Blood's. Humans born with the mark of the Horsemen, who have been shaped for the roles.
Each horsemen is equipped with their Heir and Retainer (Protector) except for Death...
13 years... 13 years she spent inside of a four foot by six foot grey cement cell. She could have gone mad, she could have just killed herself. But instead she waited and then it happened, her dream came to reality. Her cell door opened and her dark angel came to Save her.
Morrigan is released from her confinment only to be placed in another. Death has chosen her to be his Heir, and she is less than thrilled about it. The Other horsemen hate her, her Retainer is a pushy 4000 year old Demon, and Death is oddly optimistic. Now she must train her mind and soul to prepare to ride the Pale horse of Death.
But the price she must pay in order to gain the Title of Death may be to steep, even for a child that was raised on death row.