Family just changing DD's name?

[duckdarlington]

DD's name is uncommon, but is often used as a nickname for a much more common name.
We dont like the common name and didnt call her that, family members however expressed their dislike for her name when she was born.
It was her birthday yesterday and we recived 9 cards adressed to the more common name that isnt her name!

Would you make a fuss? Is she damned to a life of this from now on?

Perfect response. If it carries on correct correct at every opportunity they'll soon get bored.

So bloody rude!