Ghost Sister

Background
One day, a brother and a sister play a game. But the sister gets lost in the woods. The brother returns home, and some time passes before suddenly, his sister appears in his room. There she is, alive, but she isn't breathing. Her eyes are blank and dark, and it's apparent that she had died. Her mother blames the brother for her death, and as she speaks she suddenly begins to choke, as if she's being suffocated. The brother watches his mother die, being choked to death by his sister, who sits next to him. But he knows that his sister blames him, too, and can feel her slowly draining his life away. Instead of sticking to the promise made that, should one of them die, they come back and tell the other what it's like on the other side, she decides to let him see it for himself, just like she did.