Unbeatable ~Sequel to "You can't beat me"~

Cassandra Sky Nightingale, or should I say Mikaelson, is finally accepting what she is. Not only is she Klaus' twin, which her part vampire part werewolf, she's a witch as well. She gets back to Beacon Hills from the time she spend with her family in Mystic Falls. New things are waiting for her. Can she do it alone, or will there be someone to help her?