Wrong about time since death is

Reddish- to bluish-purple discoloration of the skin due to the settling and pooling of blood following death If her body was contoed for four to five hours after death . In 6 - 8 hours , Lividity fully developed and fixed . Ref synopsis of forensic laxminarayana 4e ; Krishnan vij Textbook of Forensic medicine and Toxicology 5th edtion