A 22-yeаr оld wоmаn is fоund disаrticulated and burned inside a barrel 2 days after she was last seen. At that time she had been arguing with her boyfriend. Autopsy shows extensively charred human remains, with only portions of major internal organs present and multiple bone fractures. Soot was not found in the remaining airways. Toxicological analysis of remaining liver tissue demonstrated delta-9-tetrahydocannabinol (THC) and oxycodone at elevated levels. What is the best characterization of manner of the of death?