She said they were not forewarned. They did not know. They were doing normal girls stuff and turned around and there he was.
She is doing something--she is coming forward in spite of people who will smear her and call her transphobic. What else is she supposed to do. She probably did cover herself as soon as she saw him. They probably did say something--but at the moment, they were shocked and probably didn't know what to do.

You can't blame this one on the surprised girls who did not expect the adults in the room to suddenly take over and push their agenda on them.