Oh God,here we go
Are you new to this case ?
Here we go, nothing! What do you think was happening, Lookout. Was Sheila trying to prevent Nevill from having a shower, or vice versa? A shower makes an excellent weapon, especially when on turns it on. I can't imagine Nevill, with a useless arm and have his jaw blown away, could have put up much of a fight, and how would he have got back to the kitchen? Why would Sheila have taken a gun into the shower with her? If she hadn't got the gun, there'd have been no reason for a struggle, surely? Perhaps you need to think your tableau through to some sort of a conclusion.