Sheila's nose started to bleed whilst police lifted her body into position on the bedroom floor. it is not yet clear to which entry wound this nose bleed was / is related to? But I personally think the nose bleed is associated with the first wound because blood from the upper wound does not replicate the direction of blood flow from the nose...
admittedly, niether does the blood which originally ran vertically from underneath the lower entry wound, but tbat blood had already dried..
This leads me to suspect, that blood which bled from the nose, gathered in Sheila's throat, mouth and nasal passage, and spilled from her left nostril during movement of the body by police...