Hi, I have an employee who called me to raise a concern they had with their manager about a new scheme that was implemented and that they did not understand. During the conversation they mentioned that they never had the best relationship with them but they love their job and always managed. I asked what were their expectations from sharing this and they said they just wanted me to know and keep a note on their record. I did my little investigation about the new scheme and went back to them with a clear explanation. I did recognise that the communication could have been better and will ensure that for the future. She replied back to my email thanking me for the clarification but also raising 2 old incidents were she felt stressed and anxious during those conversation with her manager ( 2 years ago and 18 months ago). I am not comfortable just filing this as she again doesn't want to raise anything formal but want HR to be aware. It doesn't seem to be fair to the manager to record 2 incidents without giving him the opportunity to provide context. Should I offer mediation. What would you do ? Thanks