Baby name

So this is more of a rant than anything - but we are keeping the name a secret until the baby is born because his mom said "no hippie names" and has been very annoying in telling us how much she hates those types of names. Well, its that type of name. I've never heard of anyone with this name, ever. Our baby shower is tomorrow, and a select few people know his name from my side of the family. Im worried that someone might blurt it out. I know she and her side of the family will have something to say if they hear his name and will try to press other generic names on me. In this stage of my pregnancy, I'll snap. I really don't want it to be brought up and end up ruining the party and the rest of my pregnancy. His mom especially gets under my skin and stays there for a while so I'm really not looking forward to this happening. Idk what to do!