De acordo com a resposta do post original, o livro em questão é " Whispers From the Grave " por Leslie Rule
When Jenna discovers the diary of a girl who was murdered over 100 years ago, she is startled by how much they have in common. Rita looked like her, acted like her, and faced the trials of high school while experiencing the thrill of first love. As Jenna reads of Rita's tragic past, she fears for her own future. Because Rita's history is repeating itself--in Jenna's life.