It isn’t that common. I think there’s an important distinction being missed here. Social workers identifying psychological distress as a potential safeguarding factor is not the same thing as pathologising an abuse victim. A mother saying she is anxious, traumatised or psychologically struggling does not automatically mean “she is unstable” or “she is a risk to her children”.
Good social work should ask why she is distressed, what impact it is actually having on her parenting, and what is happening in the wider family system. If her distress is a consequence of coercive control and domestic abuse, then the abuse itself has to remain central to the assessment.
There absolutely can be a chilling effect if victims believe that disclosing mental-health difficulties will be used against them. But that is an argument for better, contextualised social work assessment, not evidence that social workers inherently pathologise victims.
You are very absolute and rigid in your thinking.