Say for example you went to a pub regularly (it's not a pub but for this instance it is) and you witnessed the female chef screaming at one of the barmaids one morning outside the pub and her hands round the bar maids throat accusing the barmaid of fucking other people.
Say you reported it to the manager, the manager sacked the chef but you go to the pub a few times since and the barmaid has massive bruises on her face.
(You tell the manager again and they say they haven't asked her where she got the bruises but they agree that it's probably from the same person)...
Hypothetically speaking (🙄) is there anything you can do?
You don't know the barmaid surname or where she lives but you do know she has a child because she happened to mention it a year ago.