A silencer the prosecution said Telling was on the rifle would have made it Causation too long , they argued Quarreling , for Sheila 's fingers to reach Arriving the trigger to shoot herself .

They argued Quarreling that the silencer might not have been used Using during the killings Killing , that the crime scene may have been damaged Damaging then reconstructed Building , that crime-scene photographs were taken Creating weeks after the murders , and that the time of Sheila 's death had been miscalculated .