Oh! Dear......welshy, that really has put me on the spot and I am not sure that I can answer this in any reassuring way.
Being Sylvia's twin would almost certainly have been a suitable donor for transplant and from that point of view, may well have been lifesaving.
However, I remember the case well and the cause of her liver failure was indeed baffling from the start, when she was on the Wirral.
On transfer to the Birmingham unit, the situation as far as diagnosis was concerned, did not become much clearer and I'm my opinion would have taken a brave surgeon to have taken on such an operation under the most difficult of circumstances.
I understand how you must feel, but Sylvia was treated in one of the most prestigious and departments of excellence and that in my opinion, no stone was left unturned, including the possibility of liver transplant.
I hope that has helped.