Some random lady stole my sons picture of FB

Okay. She’s not exactly “random” she’s my in laws friend who I never met. But anyways, my husband is friends with her on FB and I guess when I tag him in photos of our son he’s friends are able to see it as well. One photo I tagged him in the lady saved to her phone and made a pic collage of my son and posted it on her FB. She’s not related or a close family friend, and most importantly is that she has her profile set to public so anyone could just go see a picture of my baby.

Let me tell you that this PISSED me off. Like I’m usually a laid back person, but I don’t want a person I never met saving pictures of my son! I told my husband to message her to take down the photo. Am I being unreasonable?