DD10 has become friendly with a new girl in her class. We’ve had her over to play a couple of times and yesterday DD was invited there to play. When she came home she said she’s never heard so much swearing and that her friend’s parents swear all the time including at the children. She seemed to find this amusing more than threatening but AIBU to not be happy about her playing there again? Or am I being a bit precious/unreasonable. I don’t know why but I just feel this is not an environment I want my child to be in.