How Did Heather Begg Die?

Dame Isoleen Heather Begg was a New Zealand-born operatic mezzo-soprano who spent most of her career in the United Kingdom and Australia. She was "a versatile artist" with a "gift for comedy", and became renowned as the title role in Bizet's Carmen, Amneris in Verdi's Aida and in lighter operas such as The Gondoliers.