Part of her toe nail polish was found on the floor in the kitchen below the mantle placing Sheila at the scene of the attack on Nevill in the kitchen. Forensic expert Peter Sutherst confirmed this, saying: “The red object is not paint from the mantle shelf. It is more likely to be a particle of red nail varnish from Sheila Caffell’s right foot since it is a close match in hue to her varnish and also matches damage to the varnish on her right big toe.”
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Hopefully no one here can believe such BS... That Sutherst can tell from looking at the kitchen photo that a spec of red is toe nail polish - oh and it just happens to be the correct shape and size.

Her ( human ) nails WOULD have been intact.It was the false nail which WASN'T !! 
Wrong as usual. She wasn't missing a false nail. Where are you getting this from, if you can't show where you're getting it then the information is coming from YOU.