My 12 yr old DD went to visit her 18mth old cousin the other day. While she was there my DD shortened her cousins name and was told off by her Auntie my SIL. My DD came home very upset and i asked her what had happened she told me. I know some people do not like their childrens names to be shortened but to upset a 12 yr old is not on. I have told her not to go for a while. My hubby said not to take any notice but my DD is upset as she loves her cousins. What can i do and am i being unreasonable in keeping her away for a while thanks.