There are times when certain things don't need a spotlight on them.Explain?
This is one of them. So instead of trying to try and figure out who or what made her do it, just appreciate she did it in the first place. You could've noticed it and kept it moving like many others have.
She's an adult and can do what she wants. No one can make her post a proof pic or whatever.
Which is why I said, relax.