DP and I have been together since DD was just turned 2, she's now almost 6. I have no contact with my parents and it isn't ever going to be reestablished. When she first met dps parents dps neices and nephews were there and so everyone was obviously calling them Nan and grandad so DD did too. I corrected her with names and explained over the years that they aren't her grandparents really but they treat her really nicely, we holiday with them every year and she loves them so she says she wants to call them Nan and grandad anyway. They are happy with that but no one has ever suggested it or pressured her. Her father repeatedly tells her off for it so much so that she's not allowed to mention them to him. As I don't have parents myself for DD to be close to I think it's lovely for her to be close to dps parents; she has a relationship with her father's parents too so it isn't as if its usurping them. AIBU to not tell DD off for her choice to call them Nan and grandad?