She's faster than that: 
5,000m - 15:21.85 Indoor
3,000m Steeplechase - 9:41.31
5,000m - 15:24.74 Outdoor

That indoor time is superior to the outdoor time of course. The tight turns slow a runner, and passing is much more difficult.

(I think that the outdoor best might be her NCAA 8th place time, run two or three hours after the steeple.)

Her shoe was barely off, or wouldn't have stayed on to until 3,000m or so.

I've had shoes taken off by other runners, while wearing spikes, long before the advent of waffle soles. I've worn waffle soles in extremely difficult mountain races, i.e., Pike's Peak.

If she had stopped right away, she probably could have stuck her finger in the edge of the shoe and pulled it back on. 

She's very light, with a long stride for her height, so probably got away with less wear and tear than a heavier, more muscular runner would have.

If she hadn't run miles with that loose shoe, and more barefoot save for her sock, she also would have probably run faster.