I'm not the only one that has noticed this behaviour, neighbour on one side has said she screams like a banshee / fish wife. I am not a neighbour, just a few doors down but my ds is friends with the kids and they all end up in my house a lot. Hence how I know so much. i dont see why you feel torn. she is verbally abusing her children and multiple people have witnessed this. your child has witnessed her being physically abusive and you have seen suspect bruising on the child. i would phone social services straight away. its better to be wrong about these things than to have a child suffer because people were too scared to report it. You are worried about some children that your son is friendly with as you have concerns that they are not being cared for appropriately. You mention shouting and screaming that you and others have heard. Your son has reported that a child was dragged upstairs in a violent way. You are clearly worried about the safety of these children. It would be important to pass this on so these children can get the support and help they need. You can contact NSPCC anonymously if you are concerned about reporting this, or alternatively you can contact your local Children's Services office to speak with a Social Worker.