Gaynor I'm so sorry to hear that your sister is so poorly.
My ex-manager sister has serious type 1 diabetes and was and still is very ill...she had a transplant and her body rejected it...she is a young woman in her 30's but has has hardly any life at all as she has suffered with this since a very young child...I have seen and heard about the effects it has on her entire family as they are on a roller coaster ride of emotions at.
Thank God for the special people who donate their organs........
God bless your sister and God bless you too.
(((big hugs)))