Marisa

“I suppose the real reason Ginny Weasley's like this is because she opened her heart and spilled all her secrets to an invisible stranger."
"What are you talking about?" said Harry.
"The diary," said Riddle. "My diary. Little Ginny's been writing in it for months and months, telling me all her pitiful worries and woes- how her brothers tease her, how she had come to school with secondhand robes and books, how"- Riddle's eyes glinted- "how she didn't think famous, good, great Harry Potter would ever like her..."
All the time he spoke, Riddle's eyes never left Harry's face. There was an almost hungry look in them.
"It's very boring, having to listen to the silly little troubles of an eleven-year-old girl," he went on. "But I was patient. I wrote back. I was sympathetic, I was kind. Ginny simply loved me. No one's ever understood me like you, Tom... I'm so glad I've got this diary to confide in.... It's like having a friend I can carry around in my pocket...."
Riddle laughed, a high, cold laugh that didn't suit him. It made the hairs stand up on the back of Harry's neck.
"If I say it myself, Harry, I've always been able to charm the people I needed. So Ginny poured out her soul to me, and her soul happened to be exactly what I wanted.... I grew stronger and stronger on a diet of her deepest fears, her darkest secrets. I grew powerful, more powerful than little Miss Weasley. Powerful enough to start feeding Miss Weasley a few of my secrets, to start pouring a little of my soul into her..."
"What d'you mean?" said Harry, whose mouth had gone dry.
"Haven't you guessed yet, Harry Potter?" said Riddle softly. "Ginny Weasley opened the Chamber of Secrets. She strangled the school roosters and daubed threatening messages on the walls. She set the Serpent of Slytherin on four Mudbloods, and the Squib's cat."
"No," Harry whispered.
"Yes," said Riddle, calmly. "Of course, she didn't know what she was doing at first. It was very amusing. I wish you could have seen her new diary entries... far more interesting, they became... Dear Tom," he recited, watching Harry's horrified face, "I think I'm losing my memory. There are rooster feathers all over my robes and I don't know how they got there. Dear Tom, I can't remember what I did on the night of Halloween, but a cat was attacked and I've got paint all down my front. Dear Tom, Percy keeps telling me I'm pale and I'm not myself. I think he suspects me.... There was another attack today and I don't know where I was. Tom, what am I going to do? I think I'm going mad.... I think I'm the one attacking everyone, Tom!”
― J.K. Rowling, Harry Potter and the Chamber of Secrets