The ghost floated behind him as soon as she saw the pictures in the story. The one who wrote this took a long time to do it. Perhaps, it was made when the big sister was alive and then the ghost of the forgotten took a hold of her memories and tried to make someone realize what she wished before her death. Unlike the Ghost Child, the big sister didn't get to be a ghost.
He felt a slight chill on his bad but then a notification popped up showing the activation of more powerful protection against spirituality. It wasn't for the poison alone, it was also for the fact that he could die.