Dd (15) told me tonight that an old friend of hers, same age, when they were friends from about the ages of 8-10, would force my dd, and other mutual friends, to kiss her with tongues. This probably only happened a handful of times for each child and only ever at the girl's house. But on one occasion, my dd & her other friend that the girl had only met that day, got her friend's mum to drive them home as they were upset by it. My dd is saying she was upset at the time but is fine now. I knew nothing of this back then. I can't help but feel that this girl may have had it done to her. The girl may have known it was wrong as she was secretive about it. I know the mum. Should I say anything to her or just accept that it's in the past & my dd is ok now? I've reassured her she can talk to me about it at anytime