This dream is rich in symbolism and seems to reflect deep-seated fears, feelings of entrapment, and perhaps a struggle for survival in a threatening environment. Here's an interpretation of the key elements:

1. The Demon and the Abandoned House: The demon often represents fears or inner turmoil. Living in an abandoned house may symbolize neglected aspects of your life or unresolved issues. The idea of being punished by a demon for being "food" can symbolize feelings of vulnerability or being consumed by your fears or responsibilities.
2. The Dead Body and Crying: The imagery of the half-eaten body and someone crying over it points to feelings of despair and the struggle with guilt or anxiety over survival. It could indicate that you are grappling with something that feels overwhelming or that you are feeling pressured by external expectations or situations.
3. The Railroad or Mini Coaster: This part of the dream may suggest a loss of control over your life’s direction. The track stopping could symbolize a halt in progress or feeling stuck. The upset of the other characters indicates the potential consequences of your perceived failure or their dependence on you.
4. Jumping into the Water: Water often represents emotions, and jumping into it symbolizes a dive into your feelings or a desire to escape. The act of swimming to an island suggests a need for solitude or safety, while the dark forest represents the unknown or fears that lurk in your subconscious.
5. The Ropes and Ledge: The ropes could symbolize entrapment or obstacles in your life, while the ledge represents a potential escape or a way out of your current struggles. Your resourcefulness in using the rope to climb up signifies resilience and the ability to overcome challenges.
6. The Two People Hanging Themselves: This grim imagery may reflect feelings of helplessness or the impact of your actions on others. It might suggest that you are concerned about the consequences of your choices on those around you or the fear of abandonment.
7. The Tall, Skinny Lady: This character could symbolize a new perspective or a creative outlet, as she claims to be an author. Her unusual appearance might represent something foreign or unfamiliar in your life, possibly a new idea or the emergence of a creative aspect that seems out of place.

Overall, this dream seems to encapsulate a struggle with personal fears, the feeling of being trapped, and the search for a way to reclaim control in your life. It may be beneficial to reflect on your current circumstances and emotions, addressing any underlying issues that may be contributing to these intense feelings. Consider seeking support from friends or professionals to navigate these complex emotions.