Well, cool, SmoothOperator. I've very much enjoyed reading your posts.
JUST SPECULATING:
Good morning all. According to all I have seen of the timeline (such as it is) and I don't have time to quote the articles here, but I can later if you want, Clint supposedly grabs a gun after the last call from Mom as she is speeding back home with her friend. Next, he goes out to the garage and sees the blood, at which time the neighbor whose son heard the scream pulls up in the driveway. Followed by the noise of the police car engines on Swan Johnson Road, the police, mom, and the entire population from the nearby woods and beyond.
Here's my question. Is Clint brandishing a hand weapon when everyone shows up? Did he go back inside to lock the gun away? When did he do that? He says in speaking of the neighbor's arrival, that he might have had his phone on his side or in his hand (odd thing to mention in my opinion) and probably didn't speak to her, but just called 911, "like mom said." (He does give off the "mama's boy" vibe, does he not? )
I've only recently started reading about this case (I heard about it after reading some of the Lauren Spierer case) so forgive me if I'm completely off or if this has already been addressed, but I think birpu raises a great point: is there any way to prove his mom told him to get the gun? From what I've read here, I'm leaning toward the accident theory. I think, if he had accidentally shot his sister, one of the biggest concerns would be that his DNA/fingerprints was on the gun. Because the timeline seems so tight, the boyfriend or someone else would likely have had to been there while he was making all of these phone calls to remove Holly from the scene. Another variation of this could be that the boyfriend was the one who pulled the trigger, but regardless, we would get to the same end point: brother and boyfriend hunting together, an accident occurs, and instead of getting help, they tried to hide the scene (maybe it was fatal?). This could explain the mother's reaction (crumbling to the floor) as well: instead of telling her Holly was with a strange man, he was actually telling her that something horrible had happened, Holly was injured/dying/dead/etc.
The coverup/lies would be that his mother told him to grab a gun. First, I think that is a strange reaction: nothing in the narrative so far seems to warrant that a gun was necessary. Couldn't he have just strolled out and called out to them? I feel like grabbing a gun would come later, when he actually realized, "oh hey, something is actually wrong," which he clearly didn't, based on his belief that the man in question was the boyfriend. Second, if he already had a gun on him because HE HAD ACTUALLY BEEN HUNTING ALL ALONG, this would give him a necessary excuse: I wasn't hunting, I grabbed it to protect Holly.
The other big one would be the boyfriend hunting on grandma's land. How long have they been dating? Has he been to family functions? It seems likely they wouldn't recognize the boyfriend's family, so if his dad went out anyway and took a friend, this could explain the confusion. Maybe that's what even caused some of it. When did the dad stop hunting? Drew clearly had to be at work, so I just can't see him hunting at that time. Maybe he was already on the Bobo property and his dad went later with a friend, and then grandma got confused. Maybe Drew called Holly out while they were making these phone calls and while she was out there trying to figure it out, something tragic happened?
Again, all just speculation.