Amandalouise this isn’t a referendum on your parenting or on your particular situation. It sounds as though there are many features which distinguish your situation from the OP’s, not the least being that you are not the one whose privacy and confidentiality have been violated.

Regardless of whether an adult is forcing a minor to disrobe against their will for sexual gratification or because an incompetent therapist who met the family once advised this, it remains a humiliating and abusive act.