I think she did most all the right things, and came out smarter for it.
We had a top manager here at work (in CA) that was caught trying to get young girls in bad situations on line, a true creeper... you know they have to get lucky once in a while for them to become good at it like this ring...
Report him regardless if he texts again... he'll just keep doing it until he finds a girl gullible enough to show up alone or go where he wants. He's a preditor and must be stopped!! BTW, he probably was there, and saw that you had a friend.