I'm a private carer. Today a client confirmed what I had been suspecting that her son has been physically abusing her. He has undiagnosed mental health problems and his mother is frightened by his outbursts. I have witnessed some of his rantings but not the violence. I've seen the bruises and taken photos. His wife and small child live there also. My client does not want me to report this at all. I'm worried for everyone's safety. What should I do?