My Mate Is A Vampire Elemental

Lyric Waters is a sixteen year old Vampire and the sister of a werewolf,her parents died in a rouge attack and her pack blamed her for their death and that's when the abuse started. After John the Alpha of her pack rejects her she is pushed over the edge,so she fakes her and friends Lilly death and they run away. They stumble upon the most powerful pack where Lilly finds her mate and Lyric finds her second chance mate. Everything was going fine until she has train her pack for a upcoming war so that means she has to face John and Dave. With Lilly and Jackson by her side she's fine but then when Lyric goes for a run a dark force enters her and takes complete control over her body. Now her mission is to kill the alpha and the whole pack....will she complete her mission. Will the demon ever leave her body and more important will she ever be herself again?