DP and I met when dd was 18 months, he also has two DDs around her age. They are now all 6/7 and we also have 2 young dc of our own. She started calling him 'daddy his name' after a year but naturally, due to his children calling him it repeatedly she dropped it to just daddy. I corrected her but it stuck and still does, though she is well aware he isn't her father - 'she just loves him' she says. She sees her father twice a month and he breaks promises constantly, only has her when not busy, she isn't ill etc. he's decided he's had enough of dd calling DP daddy and wants me to stop it. However, I think it's up to dd to choose. She knows the realities and chooses to continue to call DP it because he looks after her when ill, collects her from school, goes to school events, reads with her etc. aIBU to not force her to stop?