Remnants of her

They

A person tormented by the memories of their dead lover. They used to be an upstanding and talented individual, but since her death a few years ago, they have become extremely depressed and incapable of putting effort into even the simplest tasks. They just continue living a dull life, now a shadow of their former self—an empty shell.

She

A special, strange, and intelligent girl. Even if you searched the whole earth, you would never find someone like her—or so they think. The truth is, she had a truly unique personality. She would do whatever she wanted, whenever she wanted, without giving a single thought to social norms or the like. This, combined with her talented and nonchalant nature, made her stand out easily, making her a prime target for bullying and ostracism. Not that she cared about any of that, though. Now, she is stalking them, appearing in front of them whenever they are alone. Is she some kind of ghost? A hallucination maybe?

…Is it really her?