We don’t have a great relationship. She’ll be the first to tell you that,” Jack said on the “Disrespectfully” podcast.

The heavy metal pioneer and Black Sabbath frontman died July 22 at the age of 76 following a series of health issues, including Parkinson's disease. Kelly thanked her father's legion of fans for their support in the wake of an emotional funeral in his hometown of Birmingham, England, last week.