Been told that another Mum has slated my DD’s behaviour in a group chat and that her DD will not go to an event if mine goes. I have asked my DD (13) what has gone on. She said that there had been some issues in their friendship group at school at the end of term - form teacher had investigated it and asked them to apologise to each other. School didn’t contact me. I am all for supporting my children to resolve conflict themselves but this one seems to have rumbled on and reached another level with parents. Do I need to approach the other parent to ask them to work together on resolving this directly rather than brandishing my DD with a reputation she doesn’t deserve?