Birth Announcement

So Im a very private person and my MIL posted our babs birth on Facebook. Im annoyed that she would do that especially after asking us after she already posted it. i told her to remove it and not poat photos of our kids again. So she sends my husband a message to tell him how hurt and confused she feels. Was i wrong? And i wasnt rude about it. i said please and thank you. And im even more annoyed that ahe couldnt tell me to my face. she uses any event for attention and makes it about her. its so annoying.