Sheila's skin had not discoloured sufficiently enough, at the time PC Bird photographed her body, for her to have already been dead for seven hours? The discoloration of her skin, by 10 am suggests in the clearest possible terms, that her death occurred only some two hours prior to the occasion when PC Bird took the crucial picture, which is consistent with Sheila still being very much alive inside whf, until after 8.10am...