Naomi Judd who was part of the Grammy–winning duo The Judds and mother of singer Wynonna and actress Ashley Judd, has died at the age of 76.

Her daughters announced her death on Saturday in a statement provided to The Associated Press.

“Today we sisters experienced a tragedy. We lost our beautiful mother to the disease of mental illness,” the statement said. “We are shattered. We are navigating profound grief and know that as we loved her, she was loved by her public. We are in unknown territory.” The statement did not elaborate further.

The Judd’s were expected to be inducted into the Country Music Hall of fame tomorrow after racking up 14 number one hits in their time together.  The duo broke up after Naomi revealed she was battling profound depression.  Sadly she lost her battle with mental illness, according to reports.

Born Diana Ellen Judd in Ashland, Kentucky, Naomi worked as a nurse in Nashville until she and Wynonna discovered their unique harmonies and started singing together professionally.

Naomi Judd is survived by her husband and fellow singer, Larry Strickland, who was a backup singer for Elvis Presley.