Dream About Tragic Loss And Mystery Solving

This dream was about

My niece Myla was murdered by her father. He crushed her skull to death. My two cats died. My mums dog Molly died. Everyone was just dying. I thought I had a bag of old clothes from my niece but they were from my mums friend's kid instead. I couldn't go through a sentence without crying because she died at only 11. She was too young. My mum asked if i saw it coming and i told her the truth: yes i did, I've thought Myla's dad was dangerous since i was little. While dealing with all this I was trying to solve a mystery with my friends. We were sneaking into this guys hotel room to get clues.