Frustrated with my mother

So I’m 19w and 29yo with ny first baby. And my mom is starting to frustrate me a little. First she wants me to make a whole separate registry for the “older people” so they can get baby stuff from Walmart instead of them just going and getting whatever they want from the store and bringing it to the shower because according to her they won’t be able to work the Babylist registry I have now(which I might add has Walmart items). And she also has an issue with some of the things on my registry and as of today she has an issue with some of the things that I want to do after birth such as delaying cutting the cord and delaying baby’s first bath so it can be in a calm setting at home with me and my husband. And I didn’t tell my husband but but to his childhood he wanted to set boundaries with the grandparents so our daughter doesn’t have a childhood of adults disappointing her or using her as a pawn. And when I talked to my mom about the rules were wanting to see she got all defensive and said life happens and if something comes up then it can’t be helped but she doesn’t need to be a part of that conversation and we can just leave her out of it because that’s something my husband needs to get over because baby is not going to be going anywhere with anyone without us for a few years. It’s just starting to get frustrating because before she was all this talk about following our rules and doing what we say and want and that she’s only coming to stay and help us because she wants to be a helping hand but it’s seeming more like she wants to take over because she doesn’t agree with the different parenting approach we want to take instead of the way she raised me.