Mom trouble...

Ugne
So my baby boy is due end of April and we still haven't decided on a name. Me and my fiancé both really like Santiago but the problem with that is my mom hates it. Okay I know what you all are thinking it's my baby I shouldn't care what anyone else thinks... Buuuutttt my mom and I have a long history of not getting along and stressing eachother out. Now we're on good terms and if I name my baby something she doesn't approve of I feel like it will be a huge fight and she's just going to be so insulted I didn't take her opinion into consideration. Like she will actually cry if I choose that name..she's very dramatic. I need help on what I should do or how to handle this situation.