I've gotten the video from MEM. It's updated on
https://s.ai/tsa/cohen; here's the
playlist link (it's two videos).
It starts off at around 28:20 in, but before then, the mother is waiting on the near left side (as one can see from the pan left at around 28-29m in).
At about 42:31, some suits come to look at things, though for some reason the camera operator thought it'd be super interesting to film the waiting tables during that period rather than the main checkpoint area.
Cohens' AIT screening starts at 24:08 (mother first).