This is a spooky, weird, and unpleasant short story full of questions.
The paperhanger was mentally abnormal. You could write any illogical story if the protagonist is such a person.
1. Why does the paperhanger kill the girl? The reason is not fully described.
2. Why does he put the girl’s body in the freezer? He could not have predicted that her mother would come to his house.
3. Why does her mother fall toward him? Was she drunk? The cause is not well explained.
4. In the end the paperhanger followed the selfsame route the doctor had taken. What does the writer want to say by this? What is the significance of the fact that both took the same routes?
The paperhanger was mentally abnormal. You could write any illogical story if the protagonist is such a person.