Alikat, your dream is incredibly vivid and multifaceted, reflecting both deep-seated trauma and the complexities of your psyche. Seeing through the eyes of your doppelganger Julie, whom you've had to battle spiritually since 2020, suggests an ongoing internal struggle. This doppelganger represents a part of you that you're in conflict with, perhaps tied to unresolved issues from your past.
When you revisit the traumatic event from when you were 15, the dream shows an alternate reality where Julie has the child you lost. The child being seven years old despite the timelines not matching, indicates that this part of your life feels frozen in time, still impacting you deeply. The petulant and aggressive nature of the child, along with their autism, could symbolize the chaotic and unpredictable elements of your past trauma, and how they've manifested in your subconscious.
Julie's dilapidated apartment, the constant police presence, and the general disarray of her life, mirror your feelings of instability and lack of control. The abusive relationship with Kyle, where violence is a regular occurrence, may represent your inner turmoil and the self-destructive tendencies you've battled with, possibly linked to your past experiences with PTSD, addiction, and other mental health challenges.
The dream's recurring elements of violence and despair, and Julie's hatred for her life as a mother, suggest a profound fear of failure and a struggle with self-worth. This could be tied to your own feelings of inadequacy or fear of repeating past mistakes. The fact that Julie won't let you meet anyone else in her life, and your suspicion that she's a serial killer, may be your mind's way of expressing the isolation and alienation you feel, along with a fascination or fear of your darker impulses.
Lastly, waking up with bruises that resemble defense wounds, could be your physical body's way of manifesting the psychological pain and battles you face.