Dreams involving dark and unsettling themes, especially those related to death and violence, can often reflect deeper emotional struggles or conflicts in your waking life. Here's an interpretation of the various elements in your dream:

1. Autopsy and the Little Girl: The act of performing an autopsy can symbolize a desire to uncover hidden truths or understand a situation better. The little girl transforming into a demon may represent innocence being corrupted, or it could indicate feelings of guilt or fear surrounding a situation that you feel you have a part in.
2. The Married but Unfaithful Man: This figure could represent a conflict between duty and morality. His disheveled appearance may reflect the chaos or stress in your life or relationships. It could suggest an attraction to something that is ultimately damaging or unethical.
3. Chase and Violence: Being chased often highlights feelings of anxiety, fear, or a desire to escape from a situation or emotion that you find overwhelming. The violent reaction of the girl and her mother could symbolize the consequences of your actions or decisions, suggesting that you fear facing the repercussions of your choices.
4. Dark Environment: The nighttime setting with dim, yellow lights can evoke feelings of uncertainty or confusion. It may reflect a time in your life where you feel lost or unsure about the next steps to take.
5. The Disabled Son and the Mother: Their presence may symbolize feelings of helplessness or guilt about unable to support someone who desperately needs help. It could also represent your fears about family dynamics or societal issues regarding care and mental health.
6. Semolina Flour Cookies: This detail may seem bizarre but can represent comfort or nourishment in a twisted context, suggesting that what is perceived as benign or nurturing (like cookies) can also lead to something harmful or powerful (the girl).

Overall, this dream may reflect your internal struggles with morality, responsibility, and the fear of facing the consequences of your actions. It could be beneficial to explore any real-life situations that feel overwhelming or unresolved. Consider what aspects of your life need more clarity or resolution, and how you can address any feelings of guilt or fear that may be manifesting in this way.