Hi

I really feel for you - what an awful position to be in.

When you say that all four sleep and eat in the conservatory do you think that maybe Sophie needs somewhere that is more her own territory so to speak? I had three 'mature' cats - 13, 12 and 12 and brought home two kittens. There was much hissing and snarling but I found that when I started feeding them in separate areas of the house and let some sleep on the landing upstairs and others downstairs, things improved greatly.

They're still not the best of friends but they tolerate each other and rub along together well enough.

Just a thought that came to mind when reading your post.