People are looking way too much into the video.

It is obvious to be the video was edited near the end. The time sequence pauses. There isn't as much a murder to solve here as there is a message to heed. Why did the police release this video? It has been edited and there really isn't anything to learn from it yet THEY knew it would become viral and people would watch it over and over again. There are definitely other video cameras around the building that would show more of her "story" but they aren't releasing those.

As far as Richard's Facebook page goes I find his friends list very odd. Why is this white guy mainly friends with Asain girls?

I get the feeling more and more like this is more of a story that we're suppose to take a message from (possibly the obvious TB) connection but I just don't know. Just don't waste too much time going over the video because it was obviously edited and put together so we would see what they wanted us to see and nothing more.