Forgive Me Jena by Avril Sabine

As the anniversary of her dad's death approaches, Jena is visited by a ghost who says he's there to help. All she wants from him is contact with the ghost of her dad, refusing to believe he can't help and unable to accept her life is in danger. Her life is too ordinary for her to ever be in danger. Things like that happen to others. People, like her father, who put themselves at risk to keep everyone else safe.