Dixie Carter: What caused her death? [UPDATED]

dixie-carter-family2.jpg As Zap2it reported, legendary actress Dixie Carter, most known for roles on "Designing Women" and "Different Strokes", died Saturday morning (April 10).

Husband Hal Holbrook's publicist first confirmed her passing and the family released a statement asking for privacy in the wake of this "terrible blow. "

"This has been a terrible blow to our family, and we would appreciate everyone's understanding that this is a private family tragedy - thank you."

But what everyone ---  including The Dish Rag -- can't help but wonder is what caused her untimely passing? 70 is relatively young. Was she ill?