The report --which was released Friday-- states a melted plastic bag was found labeled "size 0-3 months."
It also states there was a four inch long wound on her neck that was two inches deep.
The coroner believes the wound was inflicted after she died.
Authorities say corporal marine Cesar Laurean killed the 20-year-old.
Her charred remains were found buried in the backyard of his Jacksonville home.
Laurean's believed to have fled to Mexico. The reward for his capture is $46,000.