Death ig

Natsu's long lost sister, Hisui, shows up during one of Natsu's dreams. Then his dream becomes reality, when Hisui and Lucy are going to be sold on a slave ship by Bora, who got expelled for using magic to steal. What powers does Hisui have, if she has any that is. I DO NOT OWN FAIRY TAIL OR ANY OF THE CHARACTERS IN THE FAN FIC EXCEPT HISUI AND OTHERS