Thank you for sharing your vivid dream. Dreams like this often represent a complex interplay of emotions, fears, and personal experiences. Let’s break down some of the key elements:

1. Abandoned House and Demon: The abandoned house may symbolize a part of your past or aspects of yourself that you feel neglected or forgotten. The demon could represent fears or anxieties that you feel are consuming or punishing you. Its mention of eating human flesh could suggest feelings of being overwhelmed or that certain aspects of your life feel brutal or harsh.
2. Half Eaten Body and Crying Person: This imagery may reflect feelings of guilt or helplessness. The person crying could symbolize a part of you that is struggling with a tough decision or an emotional burden that feels too heavy to bear.
3. Railroad or Mini Coaster: The transition to a railroad or coaster could symbolize the unpredictability of life. The halt of the ride may indicate feeling stuck or a fear of what lies ahead, especially when you overhear that you were supposed to be food, suggesting a sense of vulnerability or danger in your current situation.
4. Jumping Into Water and Swimming: Water often represents emotions and the subconscious. Jumping into the water to escape may indicate your desire to flee from difficult situations or emotions. The struggle to navigate the ropes and the ledge signifies your determination to overcome obstacles and find a way out.
5. Hanging People: The suicide of the two individuals could symbolize the loss of hope or despair in facing overwhelming fears. It might also indicate that you feel responsible for others' well-being or that their reactions to your struggles affect you deeply.
6. Tall, Skinny Lady: The encounter with the unusual author can represent creativity, inspiration, or the unknown. Her peculiar appearance could suggest that you are confronting something unique or unconventional in your life, perhaps an aspect of your identity that feels out of place but is part of your journey.

Overall, while the dream contains dark and unsettling elements, your feeling of calm upon waking suggests that you may be processing these fears rather than being overwhelmed by them. It could be beneficial to reflect on any current challenges or emotions in your life that may relate to these themes. Consider journaling or discussing your feelings with someone you trust to further explore these insights.