Afterlight by Rebecca Lim

Since her parents died in a freak motorbike accident, Sophie Teague’s life has fallen apart. But she’s just enrolled at a new high school, hoping for a fresh start. That’s until Eve, a beautiful ghost in black, starts making terrifying nightly appearances, wanting Sophie to be her hands, eyes and go-to girl. There are loose ends that Eve needs Sophie to tie up. But dealing with the dead might just involve the greatest sacrifice of all.