The use of psychological elements can make a girl - related scary story effective. For example, if a girl starts to lose her sanity gradually. Maybe she sees things that others don't, and she can't tell what's real and what's not. This creates a sense of unease and fear. Another aspect is the appearance of the girl in the story. If she has a strange or otherworldly look, like pale skin, long black hair covering her face, and a blood - red dress, it gives a spooky vibe. And the idea of a girl being haunted by her past or a family curse can also be a great element for a scary story.
One element is the unknown. For example, if the girl's identity is a mystery, like in a story where a girl appears out of nowhere and no one knows who she is or where she came from. Another is isolation. When a girl is alone in a spooky place, like an old house or a dark forest, it makes the story scarier. Also, the presence of something supernatural, like a ghostly girl or a cursed object related to the girl.
Well, one element is the mystery surrounding the rat girl. Is she a cursed human? A vengeful spirit? Not knowing her origin makes it scarier. Another thing is her behavior. If she hunts or preys on humans in a very inhumane way, it gives the story a chill factor. And the environment she is in, like a desolate forest or a spooky old house, can create an atmosphere of fear. For instance, if she lives in a dilapidated attic and creeps around at night, it's quite spooky. In a story, if the rat girl can somehow invade people's dreams or thoughts, that also makes for a very scary scenario.
One element is the color of the eyes. For example, red eyes are often associated with evil or danger in many cultures, like the devil having red eyes in some religious and folk tales. Another is the unexpected appearance of the eyes. If someone is in a seemingly safe place and suddenly sees a pair of eyes in the dark, it's very scary. For instance, in an empty attic, when you're rummaging through old boxes and then out of nowhere, two glowing eyes appear from a corner.
One element is the feeling of being alone and not really belonging in a new place, like a foster home. For example, if the girl is in a big, old house and she's the only one who hears strange noises, it makes the story scary. Another element could be secrets in the house. Maybe there are locked rooms or hidden objects that hold some dark past related to the house or previous residents.
The element of being haunted by past memories can be really scary. If a person with a photographic memory has had a traumatic experience in the past, like being in a car accident and seeing people die, those memories keep coming back. And because they can remember every little detail, like the smell of burning rubber and the screams, it's like reliving the trauma over and over. Another aspect is when the photographic memory is used against the person. Maybe a villain realizes someone can remember things perfectly and tries to silence them, which creates a constant threat.
One element is a sense of being trapped. If in the dream, the protagonist is stuck in a small, claustrophobic space and something bad is approaching, it's very scary. Another is the distortion of time or space. When things seem to stretch or shrink in a way that defies logic, it creates unease. Also, the presence of the unknown. For instance, not knowing what is making a strange noise or who is following you in the dream can be extremely frightening. In a dream - related short story, these elements can be used to build up the horror.
One element is the setting. Dark and isolated places like an old cemetery or a haunted house can be really scary. For example, a story set in a derelict asylum where the walls are crumbling and there are strange noises coming from the empty rooms. Another element is the unknown. When there are things that the characters (and the readers) can't explain, it creates fear. Like a strange figure that disappears when you look directly at it. Also, the use of suspense. If a story builds up tension slowly, for instance, by having a character hear footsteps getting closer and closer but not knowing what's causing them, it makes the story scarier.
One element is its appearance. For example, if a dog has matted fur, bloodshot eyes, and bared teeth, it immediately looks menacing. Another is its behavior. If it growls constantly, stalks people, or chases them without any obvious reason, that's scary. Also, the context matters. If the dog is in a spooky place like an old, abandoned building or a dark forest, it adds to the scariness.
A sense of impending doom is a great element too. If the characters in the story keep getting signs that something bad is going to happen, like in a story where a family keeps finding dead birds on their doorstep before a series of strange events start to occur. This makes the readers or listeners feel on edge and scared.
A key element is the build-up of tension and suspense. When you don't know what's coming next, it keeps you on the edge of your seat.
One element is the sense of betrayal. Since she is the girl next door, you expect her to be normal and friendly. So when it turns out she has a dark side, it's a shock. For example, if she was secretly a serial killer, it goes against the trust you had in her as a neighbor.