I'll make mention of something that happened while I was there...
As I was leaving, there was a group of "kids" (between 17 and 20 years old, probably) arriving. They were doing the typical high school stuff, doing horror film-esque screams and trying to spook their friends by rushing out from behind a tree and growling.
But the thing that got me was that one of the girls mentioned that when you visit the Grove, you're supposed to leave a token at the Infant Daughter stone unless you want to die in 7 years. I found this one amusing, because it's been more than 7 years since my first visit to the Grove, and I've never left anything behind other than footprints in the mud.
As I walked back to Rubio, I noticed another vehicle pulling up with 5 more "kids", all seemingly of the same peer group. I made a few phone calls, finally talked with dispatch at Cook County Forest Preserve Police, and let them know there was a group of at least a dozen individuals in the Grove, and I had a feeling they might be up to no good. The dispatch replied, quite curtly, that "the forest preserve is open until sunset." I told her I understood that, however these weren't people going to pay their respects or to document the condition of the Grove or to ghost-hunt. I had a distinct feeling that they were there to fool around and possibly add to the desecration. The dispatcher's reply was simply that she'd let the officer in the area know.
So, it seems to me that the Powers That Be who are in charge of protecting the final resting place of 150+ people aren't overly interested in taking that responsibility seriously.