The Australian singer issued a statement two days after Billy Ray's son, Trace Cyrus, wrote an emotional open letter asking his father to get help

Firerose joins Trace Cyrus in speaking out about the country singer's condition following his "disaster" performance.

Firerose—who was born Johanna Rose Hodges—in turn accused him of screaming at her and controlling her, and said he kicked her out of their house the same day she was scheduled to undergo a preventive double mastectomy (she is a carrier for the BRCA1 gene).