How to make my sister see she is wrong

I work in the justice department, so I see a lot of things, and a lot of things people have done, especially to young children.Today is my daughters birthday (3) and my sister posted a picture of my daughter naked in the bathtub with a cute Happy Birthday message to Facebook. I called her and told her awesome post but can you change the picture.... well that led to her yelling at me because it’s her Facebook and that she will delete the whole #%%*** post, then hung up.She then proceeded to send me a picture of her deleting the picture off her phone completely when that was the only one she had apparently,My question is how do I get her to understand that I don’t want makes pictures of my daughter in the Internet? via /r/Parenting https://ift.tt/2rulbBG