In spite of anything else she was a very talented lady, and tributes are pouring in from all over the world from some very famous names. That goes to show how far her talents reached and how well liked she was. I don't think she was ill, she was on TV not too long ago and seemed fine, although me and my Mum commented that she was acting odd and whatever. 72 isn't very old these days, but perhaps she had a bit of dementia or something (sorry to speculate, but it was just something that we commented on).
Anyway, may she rest in peace.