And yet we are led to believe that Sheila did precisely that. For apparently neither did she have any blood on her feet.
In fact I would expect to see the killer's footprints all over the place since there was so much blood? Yet according to forensics no footprints were found either inside or outside the house. This killer appeared to be some kind of magician?
Well, if there are no footprints at the scene from anybody, killer, victims or the 5000 police officers stomping around the house, then the most likely conclusion is that the conditions were not suitable to cause footprints.
There isn't really any pools of blood for people to stand in, so that footprints are created. Maybe near Nevill and near Sheila, but they are easily avoided.
The blood on June, is her own, which has dripped as she staggered around the bedroom. Much of the discolouration is the poor quality photograph and also the effects of livor mortis.