United Kingdom, July 17 -- Firerose credits her "Survivors Sisters" group of Crystal Harris, Courtney Stodden and Aubrey O'Day for helping her through her divorce from Billy Ray Cyrus.

The 37-year-old singer - who accused the Achy Breaky Heart singer of displaying "unpredictable and volatile" behaviour and "extreme verbal, emotional and psychological abuse" during their divorce - has praised her friends for their support amid the "traumatic" split and admitted they "bonded over some very difficult things".

Firerose told the New York Post newspaper's Page Six: "My beautiful friend Crystal Harris, who's a New York Times best-selling author, survived many years [of alleged abuse]. She was married to Hugh Hefner, and she's written her stori...