ghostgirl: Lovesick (ghostgirl #3)

Before she can rest in peace, Charlotte Usher must return to the tragic site of her death: high school. Once there, her assignment is to help a designated teen solve a personal problem in time for the all-important prom. But no one explained what happens if you fall in love with your class project. Charlotte would die (again) for love but facing the all-too-familiar feeling of invisibility may be too much for her to swallow.