Was this rude of her ?

I saw a post as I was scrolling through my news feed and I felt as if I related to it in a way. Okay so everyone has their own opinions and choices and I totally respect that. But in my case, i'm the type of mom that doesn't want pics of her baby on social media.... Ever. Except for MY or my husband's snapchat , I have never posted pics of our baby online except on snapchat because on snapchat I only have people I know and I love that it tells you who viewed your photo/videos and even shows you if anyone screen shots your stuff. Okay so, I was on instagram and ran into my sister in laws page and I see a picture of MY daughter when she was born and the caption is her announcing my daughter's birth. Now I know since it's her first niece she was excited but the problem is we don't like each other and I don't appreciate her posting a picture of MY baby without my permission, I think it's totally rude and don't know how to approach her about this but I want that photo taken down. I'm not trying to say there is anything wrong in posting pictures of your baby but in my case I'm a very private person and don't like my business to be known and I prefer not to post pictures of my children online and I find it extremely rude that someone would go and post a picture of someone else's baby without first asking for the baby's parent's permission I could care less if you're related to my kid or not you just don't do that to me