SHE TOOK MY BOYS NAME!?!?!?

After a family gathering my fiance and I were asked what we would be naming our baby boy and we answered. They proceeded to ask my cousins husband, since they are also expecting, and his reply was they weren't sure, but since it was a boy he would be the one picking the name. Their baby came early and they TOOK OUR NAME!!!! I am sooooooo, gggrrr!!!! They just seem to get in the way of everything!! I was already annoyed because my aunt keeps making everything a competition, ugh. And we had some family members miss our gender reveal party because of their baby shower, only for them to postpone it 5 days beforehand. It's my 1st baby and they're just getting on my last nerve!!!