"Pure" Tom Riddle X Reader

Y/N Grindelwald was put into an orphanage at a very young age due to the neglect she faced by her parents as a child. One day an old man with a white beard showed up in her room and told her about a magical school by the name of Hogwarts. She had nowhere else to go so she went. She entered Hogwarts in the middle of what would be her 5th year, meeting one particularly strange boy, Tom Riddle. Everything went downhill from there. Even more downhill than it could have went at the orphanage.