My daughter was talking with a friend over iMessage. They were like playing a game where they search all emojis with a certain color. When she tried to send the message in this picture, the iPhone rejected, with the alert saying she was sending a nude. There’s nothing there, only emojis. What could’ve triggered the warning?
That entire context was missing in your post: you have parental controls activated aka you opted into scanning.
The post was presented as if your daughter just had a normal iPhone + not everybody uses an iPhone. You can’t expect people to know that the feature exists + that it’s activated on your daughters phone. I read daughter and thought she was an adult.