A young girl has started working with us at work, she’s actually the daughter of another colleague, now we start work before our store opens, I have always sworn when things annoy me, mainly saying “ for fucks sake” I wouldn’t do this with customers present as it’s not very professional. Now I was in the tea room having my break the other day, and her mum started saying to me oh my daughter has never swore, doesn’t like swearing etc so her daughter has obviously told her mum she doesn’t like me doing it, why didn’t she just tell me she didn’t like it? I mean she’s 22 not 16, also I don’t see why I should stop when it’s something I’ve always done, I’m not aiming it at her, it has nothing to do with her, I find this quite annoying, am I in the wrong?