This is perplexing. There were people in and out of the park. Emma walked in and immediately saw Bowie, and pretty quickly saw Katie. Did no one else see them? It makes me think maybe she was killed closer to the time she was found. Or maybe she was killed in a more hidden area and her body drug to where it was found. Although that doesn't seem too likely I admit. Just some of the location/timeline things aren't making sense to me yet. Unless some people did see her and just kept walking and have since kept their mouths shut. Or maybe they have spoken to police and it just isn't public yet. I would be interested to know if the police have good idea of the time she was killed.
I find this odd/interesting as well. Thats why a few posts back I asked why Emma would be following Katie via the iPhone app though I think I'm satisfied on this point now.
Still, I just can't get my head around the fact that the first person who discovers them and calls 911 is also the significant other. I mean, what are the odds of that? The surveillance video shows any number of people walking thru or by the scene.