I had an e-mail conversation with the lead detective on this case (ST) and asked about the head wound because I suspected a hockey puck that ricocheted around after being struck. He stated to me that the weapon was, in fact, the flashlight - it was a perfect fit to the wound.
Why did I suspect a golf club/hockey puck? Because Stine's boy played hockey, HR forbid BR from playing it or owning a hockey stick. But, Stine Boy gave an old taped-up puck to BR and it was just too odd of a detail that was addressed in the parents' book.
I had always thought that the head wound happened at the Stine's because that whole visit was shrouded in mystery and the fact that the Stines weren't called to the house in the morning, but rather left for their own vacation. Yes, I am well aware of the professionals opinions about the pineapple, etc. and the estimated time of death, but played with the notion that the head wound did not cause immediate unconsciousness, there was swelling and hence the pineapple and tea to reduce swelling. Then add the lies about the events after getting home, the fuzzy timeline, the whole web of deception and my amateur detective brain came up with 'injured at the Stines, with a hockey puck and the stick which BR was forbidden to touch". I've been over that theory for years.
But, I would have been willing to bet that PR called Nedra that night and it was she that dictated the RN and told PR about the tea and pineapple. I do not for a second believe that JBR went straight to bed when they got home. I think she was up and being fed tea and pineapple by momma to get the swelling down. The note is soo Nedra.
I do not think anything of the child BR hitting the child JBR with a play golf club. Kids hit each other all the time.