I found a route on Google maps that would take 8 minutes (there are also shorter routes) avoiding the main road and just crossing Campbell, rather than driving on it at any point, to reach the reported area of this camera. It goes through all the side streets where it appears from Google satellite view to be pretty low house density with lots of open areas.
The route: Escalante, Zorella, Mina Vista, La Brinca (crosses Campbell here), Piedra Seca, Juan Paisano, Real (road where camera is).
This route would take 8 minutes according to Maps. 236-8=228. So the timeline fits almost perfectly.
It seems at first an odd route, until you realize that so many of these side streets end up back at Campbell, and I am operating under the assumption that the perp(s) would want to avoid that main road in this immediate vicinity.
It's one thing to be "caught" on camera on East River Rd at 240-245 along with hundreds of other cars, but you wouldn't want to be caught on Campbell right in Nancy's neighborhood at 2:30 or 2:32 or whatever, so it would stand to reason you would go out of your way to avoid the main roads until you were far enough away.
The route I suggested above also crosses Campbell in a place that looks from Google Maps to be quite empty/remote in terms of anyone seeing. No traffic light, thus no possibility of a traffic camera being there. Check out the intersection of Campbell and Camina Brinca. Nobody will see a thing. There's also basically nothing for most of this route on Piedra Seca.
Also, looking at the longer version of the video, it seems that a car only goes by this camera on Camino Real about once an hour or so. This is crucial, IMO.
Between 00:30 or so and 2:36 it's just this one car, heading south, exactly 8 minutes away from Nancy's house. Then nothing else for more than another hour.
That is, at a minimum, one heck of a coincidence.
Finally, one of the locals in the article mentions Escuela as potentially even better than Real for avoiding detection. IMO, by the time the perps were on Real (in the scenario I laid out above) judging by Google Maps the benefits of Escuela are about the same as Real. Plus Real is a straighter shot to East River Rd and being out of there.
It COULD also mean that by taking Real and not Escuela they intended to head East on East River Rd OR turned East onto additional connecting backroads someplace between Real and East River.