I really thought that was a typo and she got second in the 5k. The 500 is an interesting distance though, definitely different from the 400. That's around when the body is switching over from mostly anaerobic to mostly aerobic so each 100 makes a difference. I think there should be more 600m races, 700 might not be different enough from the 800 to be worth including though.
Speaking of the 800, they gave it to her. The race does not start fast. I understand she was the best runner there but I would have liked to see someone at least try to run away from her on the first lap, or give a mighty surge at 600.