where did you get that from GSS?
My understanding (tho it's a while since I read the books / saw the documentaries) was that the population had dwindled, that a woman had (appendicitis?) but the only way of getting help was to send a mini boat with a note on it, hope it reached Harris, and by the time they sent help and took her away to hospital I think she died.... she was the mother of a young boy who was one of the last survivors of those who were relocated, having asked the government to evacuate them.
Now I have to go and read the books again -- -
Think the population survived more on seabirds than fish?
I have visited St Kilda, just for a short time- - it is amazing to be on an island whose picture you have seen so many times- - but I would not like to live there for any length of time!
(The NTS work parties are an interesting way of experiencing the island for three weeks while contributing to renovation and maintenance of the cottages)