I did this exact same analysis, and came up with the same results.
I also looked at some of the other pictures placing her with other athletes after 2-4k of the run. Based on her split from these pictures(the other athletes splits at 6,9k), she ran a very "human" pace the first few k's (5-6 min/k). To further confirm her cutting - the pics show her in this location 2 times with 30-40 min apart. This suggests she left the course before the 6,9 k mat - and reentered 30-40 min later (now without her chip) and ran 1 lap. I can post the pics/splits later if anyone is interested.
I also looked at some of the other pictures placing her with other athletes after 2-4k of the run. Based on her split from these pictures(the other athletes splits at 6,9k), she ran a very "human" pace the first few k's (5-6 min/k). To further confirm her cutting - the pics show her in this location 2 times with 30-40 min apart. This suggests she left the course before the 6,9 k mat - and reentered 30-40 min later (now without her chip) and ran 1 lap. I can post the pics/splits later if anyone is interested.