DN is 5. I barely see Dsis and DN as we live quite far away (think 4 hour drive), so we only really see each other at christmases, weddings and finerals. DN is named Isabella.
Our DD (2 months) is called Arabella. I was aware that it is quite similar but nobody owns a name, it isn't even the same name anyway, and we barely see each other.
When we announced name Dsis was quite upset, we 'stole her child's name' etc.
It has now been almost 3 months and Dsis is still not talking to me, she's got DM on her side, DM keeps telling me how much I've upset my sister, and couldn't I have picked a different name blah blah.
AIBU to say I can call DD what I like, it isn't even the same name, and she can get a grip?