The National Center for Child Traumatic Stress (USA) provides resources and aftercare for children who have been traumatized by domestic violence, sexual violence, neglect, natural disasters, terrorism, war zone/refugee trauma, etc. and their parents/caregivers. The Q&A above was conducted as an interview with Dr. Judith Cohen, a member of the NCTSN and Medical Director of the Center for Traumatic Stress in Children, Department of Psychiatry, at Allegheny General Hospital (Pittsburgh, Pennsylvania).
You can read more about providing protection and healing to children before and after abuse here. You can read about the effects of psychological trauma after abuse here. Finally, you can read about post-trauma shame and guilt here.