That is sad to hear. A wonderful unique voice who, as said, was only 'discovered' at 47 in Cape Verde by her French manager to begin her recording career.
Around 15 years ago after hearing and buying her second album 'Distino Di Belita' I saw her in concert at one of her annual appearances at the Royal Festival Hall.
Smoking was part of her act when she stopped for a cigarette break, facing out from the stage, to be applauded by the audience.
The funniest thing, but sadly this is most likely to be the cause of her demise.
Sodade (longing)