>>95742429She's a character from Roman Dirge's comic (and a series of animated shorts) very loosely based on Edgar Allan Poe's poem.
One of the recurring jokes in the series is that her games with people and animals end up being very damaging or straight-up fatal for them.
Depending on your interpretation (author gave plenty of evidence for anyone who wants to support either side) it happens either because she's just a very dumb kid who doesn't really grasp right and wrong and concepts of life and death are, or because she's a genuinely malicious person.
It's kinda edgy, but I like it 
