The only people who call DD Princess regularly are my parents. She's their first grandchild, only granddaughter, and I guess a Princess is how they may see her.

It's also what my Dad called me when I was younger - he still sometimes does. It's his term of endearment, I'm his Princess. Doesn't mean he doesn't also regularly call me mule (because I'm stubborn), goldfish (because I'm forgetful), among many other things - a good mother, a protective sister, strong-willed, etc etc.

I guess what I'm saying is even though I was called it regularly, I never believed the people calling me that thought less of me. I didn't think it had anything to do with my looks or a sense of entitlement or uselessness. DD has no idea what an actual princess is and has a good sense of self, regardless of the nickname. A name is what you make of it I think, if a relative does take on the name, your DD will surely tell them if she doesn't like it (mine does!) and you can use all the time you have with her to instil your own beliefs about the term.