This is my opinion from personal expiriences of my own.
A girl has an imaginary thing in her life. She wishes it was real. Her friends won't understand this imaginary entity and she feels like she has to keep it secret. Her mom says that it's not real and wants her to give it up. This entity makes her whole and feel loved and beautiful. She then realizes that people want her to get rid of it. It drives her crazy and thats where the "why shouldn't I just kill..." comes in. She feels that she has been lied to because she thought she could keep it forever.
This is my opinion from personal expiriences of my own.
A girl has an imaginary thing in her life. She wishes it was real. Her friends won't understand this imaginary entity and she feels like she has to keep it secret. Her mom says that it's not real and wants her to give it up. This entity makes her whole and feel loved and beautiful. She then realizes that people want her to get rid of it. It drives her crazy and thats where the "why shouldn't I just kill..." comes in. She feels that she has been lied to because she thought she could keep it forever.
PS I have a similar story in my personal life.