Mother in law

When I got pregnant, we all wanted a little girl, which we got!! My mother in law asked for her to be named Monique because she never got a baby girl, she had all boys. I told her we chose a different name but Monique would be her middle name which she settled for. Now whenever she talks about my baby, she only uses Monique not her first name. I don’t know if it’s my pregnancy hormones that are making me upset about it, but she never refers to her by first name and I feel like she’ll do that forever. When my baby starts being able to understand her name, I feel as if she’ll be confused as to why she’s being called 2 different things. Is it wrong for me to feel upset about her not using her first name as well?