This link has a news video of the reporter pretty much right near the scene, police combing the area, etc. It gives a good view of the area where she was found. It's a lot grassier and moundy than I was picturing.
http://abcnews.go.com/International...ist-turkey-killed-blow-head/story?id=18391296
I'd been thinking it was the case and this video confirms that I walked right past this spot when I was there in october. I stayed on the sidewalk and didn't climb up in that grassy area. there were few people on the sidewalk--it's not a very pleasant stroll with cars racing by--so I can imagine her either getting killed or suffering a fatal injury without being noticed even in the middle of the day.
as to the question about wouldn't there be injuries aside from the head injury if she fell--I'm not so sure abrasions/bruises/cuts would show a week later but I know very little about the decomposition process.