It's your bub, name her what ever you like.
Please don't change it from something you love just to placate your mother. It's not her choice. And if your not reminded of the Bogan Nicole everytime you say it, then there is no point in changing it.

My MIL hated the name we picked out (Claire Ivy) becuase there was a girl back in highschool named Claire who used to tease her, and that she'd always be thinking about it and that i should pick something else. Basically i looked at her and said "uhm, how about no. I love the name, and i'm not going to be reminded of that chick"