i had a dream that we were on vacation in this mansion with tons of random strangers staying in rooms and there was a little girl like 5 or 6 years old. at first the dream was in third person and the girl was my sister and she was spending a lot of time with my mom in the day time, but then as it got later i became the little girl. then in the dead of night i was holding an infant with my mom like she was holding the torso and i was holding the head and we kept walking around the whole house looking for a neurosurgeon who was staying there because the baby was sick with the flu and had a fever, but my mom kept putting down the baby haphazardly and letting go of her head. then we were rushing to the bathroom to run water over her or something weird and i was holding her head but my mom wasn't holding the baby right and i felt the baby's head flatten in my hands and her neck break and i started crying so then we got to the bathroom. she puts the baby upside down in the sink and she looks at it and then she's like "oh she's dead" and then she steps away and looks at me and her face turns into a void, so i run away and i try to hide from her, but i can hear her trying to tell me how much she loves me inside my head.
as for context i am mentally ill, but i have never endured any serious trauma. my sister had a twin who died shortly after birth and i recently came out to my mom as transfeminine.