So, Salazar Slytherin's locket reveals the dark nature of one's character.
We've seen Harry, Ron and Umbridge's dark nature(though she was already dark). But we haven't seen Hermione dark nature.
What do you think about the dark nature of Hermione?
Possibly Ron and Lavender or possibly her friends turning their back on her.
She was ignorant of her friends sometimes. She's not always sensitive to her friends' feelings, and oftentimes she's a bit self-righteous.
What do you think?