My grandma hates the name we picked

Me and my husband have decided on a name for our baby girl,

But my grandma HATES it. My parents like it and so do my husbands parents. I dont know a polite way to tell my grandma that it dosent matter if she likes it or not, but it's the one that we have decided to go with.

Shes so stubborn and always tells us how much she dosent like the name and I'm honestly just tired of hearing it. I love my grandma so much but its hard to go over there (we make them dinner every sunday) when all she does is talk about how she dosent like our baby girls name.

The name we chose is River by the way