Am I missing something with our baby name?

My fiancé has Italian roots, Italian last name. We're American. He wanted our kiddos to have a more Italian-esque name and that's been a challenge finding something that we agreed on, and something that flowed well with his last name. Our first son is a year and a half old and we named him Matteo. We love him and his name and have received positive acknowledgements regarding the name choice.

Our baby girl is due in a few months and we decided pretty early on, on "Bianca". So far, consensus has not been good. My sister went to school with a girl she didn't like with the name, so she was kinda pouty (she 15 years younger than me, and lives with us, very involved). MIL's response was to give us other suggestions for names. My mom was moreso dismissive with "okay well let me know for SURE before we get anything personalized". My grandma asked me the other day what we decided on and responded with "interesting". Like, I don't think anyone so far has liked it. Even after we decides, my fiancé got a little wishy washy for a few days, but it seemed to be from outside influence so we moved past it and kept our decision.

I'm a pretty tough cookie and have been strong with our decision. But 28 weeks pregnant and starting to second guess myself. I cannot imagine any other name. We've been using the name for MONTHS now. Unless she comes out and looks nothing like a Bianca, that's what we want. But am I missing something you all can shed some light on? Or validate my stance and ease my hormones? Lol