I obviously didn't know it was a stock image at the time...SilentCom said:IT'S A TRAP!
Seriously though, don't trust online meetings with people, especially if their picture is a stock image used online to lure people into trusting them. This girl may not even be a girl.
You weren't betrayed, you were played.
But anyway, I think this was just a reasonably innocent mistake. She said she was feeling very guilty about it, and that's why she talked about it with me (just so I could have closure on it). If I was being played, she'd have just left as soon as the game was up.