One anecdotal report of abuse doesn't make me "aware of the abuse that takes place in such homes". One report is just that, one report.
She was part of Opus Dei, and lived in a group home with other women, and she was abused by the head of the home, and drugged with horse tranquilizers to prevent her from leaving. She explained to me that such abuse was common, and systemic. Again, this is **first hand** information, not mere “anecdote” heard from “somewhere.”
Just because the facts don’t jibe with your notions about Opus Dei doesn’t mean that the facts should be dismissed.