“Some of us knew,” Stella Parton said in a new interview with CBS.

Dolly Parton died in Nashville on Aug. 25 at the age of 80 — a shock to fans around the world who weren't aware of her illness.

Parton died aged 80 on August 25 after months of mysterious health woes that saw her pull out of a string of public appearances, fueling fan fears for her wellbeing.