One great fanfiction with this theme is 'Hermione's Pureblood Revelation' on FanFiction.net. It delves into how Hermione discovers her pureblood heritage and how it changes her relationships at Hogwarts. She has to deal with the new - found knowledge and the expectations that come with being a pureblood in the wizarding world.
Her relationship with her adoptive parents might become a bit strained at first. She could start to question their motives for not telling her. But over time, she might come to understand their reasons and their love for her remains the same.
One consequence could be that Hermione has to face the Malfoy family. They might try to bring her into their way of life, which she has always opposed. It would be a struggle for her to keep her own values intact while dealing with their pure - blood traditions.
In Shakespeare's 'Twelfth Night', Viola disguises herself as a man named Cesario. Eventually, her true identity is revealed. The story is full of love triangles and comical situations that arise from this gender - bending disguise.
She might start to search for her biological parents. This could lead her on an adventure full of mystery and self - discovery. She could use her intelligence and magical skills to track down any clues about her origins.
Ginny's reaction could also involve a sense of helplessness at first. But then she'd quickly gather herself and use her resources. For instance, she might call on her friends and family for help. She'd be by Harry's side constantly, using her presence to comfort him and also using her knowledge of magic to try and ease his pain.
She might be overjoyed. After all, Naruto is her son. She could immediately rush to find him and embrace him tightly, tears of happiness streaming down her face.
In some fanfictions, Hermione might find out she is a Malfoy due to a spell gone wrong. For example, a spell that was meant to reveal family lineages got mixed up and suddenly she has a connection to the Malfoy family in the magical world created by the fanfiction writer. It could also be a result of a hidden prophecy that links her to the Malfoys in an unexpected way.