Brandy is right, I've seen her on GMR several times and no guy named Chester was following her (at least not in a Serial Killer Van). So I agree with everyone above, no worries.
Well, there was the time my friend Roseanne was on GMR by herself and she was confronted by a bear, but that's not likely to happen (I've ridden up there 50+ times and I've only seen a bear once).
Plus, Roseanne could ride faster than the bear could run (not that bears are slow), so she escaped with nothing bad happening and a great story to tell.
Rick / OCRR