Stella5, after some research based on autopsy report, please note the following:
Autopsy Report
petechiae: tiny red or purple spots on various parts of body....sometimes in clusters
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World of Forensics: strangulation vs hanging....."
if petechial hemorrhages and facial congestion are present, it is a strong indication of asphyxia by strangulation as cause of death."
That is not absolute. Here is a very detailed report on what does & does not cause petechial. Hanging deaths most certainly do because the oxygen supply is cut off above the heart.
http://charlydmiller.com/LIB04/2000petechiaereview.pdf
In 1985, Luke and his colleagues elaborated on this theme in a retrospective study of hanging deaths (15). They concluded that the small vessel and intracapillary pressures in the head leading to the formation of petechiae of the conjunctivae and face should reflect the extent of carotid and vertebral artery occlusion, and that this, in turn, was dependent upon the amount of compressive ligature pressure produced by the degree of body suspension. The effects of the consistency and size of the ligature were not specifically addressed. Other authors have supported this contention, but have further suggested that the petechiae result from elevated venous pressure combined with hypoxic injury to endothelial cells caused by venous stasis and tissue acidosis (2,4,5,9,10,13,16,18,22)
Persons with tight fastenings around the neck are recognizable instantly by their facial plethora and numerous petechiae
The importance of defining the pathogenesis of conjunctival and facial petechiae lies in the potential implications of their misinterpretation. They are simply markers of increased cephalic venous pressure. In and of themselves, they should not be regarded as supportive evidence of asphyxia; in a vacuum, conjunctival and facial
petechiae point to no particular cause of death
Autopsy Report - page 5 - External Description - "
the face is generally congested. There are dense, innumerable, focally confluent, fine red petechiae.
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Medical Examiners (research): If the victim has marked congestion in the face with petechiae and fine petechiae, then it is more likely death by strangulation.
See above same information applies, especially "conjunctival and facial
petechiae point to no particular cause of death"
World of Forensics...."
hanging victim will have a pale face and a protruding tongue."
Autopsy Report - page 5 - External Description...."the mouth is slightly open and
the tongue is NOT protruding."
That is also not absolute... "The tongue is usually swollen and blue, especially at the base and usually forced against the teeth when the jaw is shut, or the tip may be projecting between the lips." http://www.forensicpathologyonline.com/index.php?option=com_content&view=article&id=103&Itemid=120
Besides, Rebecca had a blue shirt in her mouth it wasn't possible for her tongue to protrude.
Based solely on these findings, the autopsy report should conclude:
Cause of Death: Strangulation
Disagree
Manner: Murder
Disagree