To help with fixes, if the author decides to make them...
"I remember the sounds of her screams, the sounds of her bones being crushed and snapped. I could hear the rest of my family. Their insufferable screaming, the unending screeching of my siblings. I remember the snapping of my bones. I remember the incessant screaming, the screeching metallic tear of twisted steel and car horns."
I just bolded and italicized the words that were repeated in one particular section. Possibly try replacing the repetitive words with some that share the same meaning, that could help with the flow. (Was "I remember" repeated often on purpose?)
This is just the portion I noticed most. Do proofread.
I found it alright, and the premise is interesting.