Powers beyond our control

1. Did anyone think to ask the children?

2. Since he didn't describe the event until a month later it could be either a false memory or a reconstruction of a hallucination. There are quite a few similar tales.

3. The energy force here is gravity.

Nope. Whims happen. And, BTW, the family is likely to be remembering wrong. Ten years is 3650 days. Unless one of the parents doesn't drive (possible), there's no way the parents would never switch off sides. And it's also highly likely that the kids switched around several times, but the only time the family remembers is right before oh no da spooky incident.

And what does "This family would never ride in a car together again." even mean? Dad dies? They sell the car? They buy a van? Or a limo? They start walking everywhere? Someone's schedule changes and they don't all ride at the same time? They take up sky diving? They trade in the car for horses and a wagon? Someone grows up and moves away? I don't think I've ridden in the same car as my parents and my brother (my only sibling) in a good 20 years, maybe 30. There's nothing spooky about it; we all got older and my brother and I have spouses. If we ride in a car, it's likely to include our spouse if it's a family thing.

Also, parents tend to put their very young babies' car seats diagonally behind them. E. g. Mom is driving, baby goes behind the passenger's seat. Why? Because it's easier to turn that way, particularly if you're right-handed, like a good 90% of the population. And even lefties would have trouble leaning straight back; it's a lot of twisting, particularly as we get older.

Even if the kids were fraternal twins, there is no way in hell that either child would never, ever cry or otherwise need to be attended to at, say, a traffic light. Ever see a kid throw a pacifier and then scream that it's now gone? Ever see a kid drop a baby bottle? Ever seen siblings fight, either physically or verbally or both?

If one kid is more trouble or younger than the other, then they are going to be placed diagonally behind the parent in the passenger's seat. Why? So the driver can reach them. And if the other parent is in the car (what, they never, ever have any other passengers?), then the brat is kept behind the driver so the passenger parent does the dirty work and the driver can pay attention to the road and doesn't have to deal.

None of the elements of your 'story' hold water.

The word is coma. A comma is a type of punctuation. And the word is dying, not dieting.

"We can all assume" Ha ha ha oh man oh man that is rich. Assumptions are just that - they are not based on fact. They are accepted without proof. I don't believe for one minute that any of this happened to your mythological boy.

First off, brain death isn't something you can recover from. See: https://www.theatlantic.com/health/archive/2012/02/nobody-declared-brain-dead-ever-wakes-up-feeling-pretty-good/253315/

From the article: "Brain death is the irreversible cessation of all functions of the entire brain, including the all-important brain stem that houses the RAS and the mechanism that controls our breathing. Dead is dead. Brain death isn't a different type of death, and patients who meet the criteria of brain death are legally dead." (RAS is the reticular activating system, see:
https://en.wikipedia.org/wiki/Reticular_formation#Ascending_reticular_activating_system not a bad definition from Wikipedia).

Second, lots of people see what they think is the great beyond. It's such a common thing that it's a trope in the movies. Most people beyond about age 10, 13 or so have seen at least one film with the whole 'white light' bit, or have heard someone talk about it.

Let's say your mythological child is under that age and has never, ever seen a film or a TV show, etc. You're still describing a "dreamlike setting" (your words, not mine), and then the mythological boy awakens from unconsciousness -- which is not the same as a coma.

Recovering from a coma takes a while, see:
https://brainfoundation.org.au/disorders/coma/#:~:text=Someone%20who%20is%20in%20a,be%20unresponsive%20to%20their%20environment.

Again, none of the elements of your 'story' hold water.
So? Did you know that there are small earthquakes all over the planet, not just at big fault lines? Knocking a few dolls over (you don't say if they're secured in any manner, planted firmly or precariously, etc.) can happen with a less than 1.0 earthquake, called a microearthquake (which is technically under 2.0 but to knock down a few toys the tremor can be a lot smaller than that). See: https://www.usgs.gov/faqs/why-are-we-having-so-many-earthquakes-has-naturally-occurring-earthquake-activity-been?qt-news_science_products=0# and https://en.wikipedia.org/wiki/Microearthquake

Tremors can also occur when there's demolition, machine work, explosions, etc. See: https://randburgsun.co.za/319361/earth-tremor-questions-answered/

Now let's talk about this situation. What's a "deep conversation"? Does it take longer? Does it mention God? Is it in French? With no definition of "deep conversation", it could be any kind of chatter. And you're expecting us to believe that these kids (of made up ages and genders) never, ever talked about their grandmother (maternal? paternal? step?) before?

"Hey John?"
"Yes, Mary?"
"Grandma died on this day three years ago."
"Okay. What's for supper?"
(dolls fall down)

Is that ^ the conversation?

The thing about this kind of horseshit is that people don't take into account all the times when a supposed phenomenon doesn't happen. Let's say it's this kind of conversation:

"Hey John?"
"Yes, Mary?"
"I felt Grandma's spirit move me and I thought about our tragedy."
"That's interesting."
"I feel closer to her than God."
(dolls fall down)

Is that deep enough? Do they need to quote Kierkegaard? Most tweens don't read Kierkegaard.

8 dolls that were Grandma's gifts. Er, okay. Did Grandma give any of the other dolls? Did she give the girl clothes, books, artwork, gift cards...? If so, did any of those things fall down? Why dolls? Do stuffed animals work as dolls? Is it Barbie? Raggedy Ann? Does Teddy Ruxpin count?

And what of other conversations, of varying depths (whatever that means)? For the 500 other conversations about Grandma, the dolls stay put. And in one, the dolls fall down.

And I repeat.

None of the elements of your 'story' hold water.

And I also repeat.

So?

Did not wish to give storey in first person. All these incidents happened for real. Trust me my sister and I spoke a lot of why that one day we switched positions in the car.

My friend I agree with what you say. However let’s now let it be known that these stories are about my sister and I. It was a serious car accident that took place the day we switched seats. I was in comma due to y head being put through the roof of a 1971 Pontiac. I wish I had the records now to backup my statements but you just have to believe.

If anyone is seriously interested in the unexplained the publication I would recommend is the Fortean Times.

It is very sober and documents certain events without sensationalism. It’s well worth a read. One of my favourite regular items is strange deaths, either people dying in peculiar ways. One person was on their way to a conference on the dangers of keeping things on windowsills when he he was killed by a flowerpot falling from a windowsill, and I think the flat owner was a guest speaker at the conference.

I can’t remember the exact details sorry, I don’t have it to hand.

If these all happened to you you can "explain" them any way you wish. Either there's a simple explanation derived from the laws and habits of nature, including both coincidence and tricks of memory, or there's some mysterious "cause" which defies common experience and scientific explanation. The first alternative will not be satisfying to you. The second is unsatisfying to those of us who prefer a rational explanation based on practical familiarity with the world and how it works.

Something happened to me when I was a child. It was a very vivid experience and for years afterwards I believed it happened. In fact I probably still would believe it happened had it not been for the subject matter.

One night I woke up, and there were entities going up and down in the hallway outside. I was terrified, and I kept as still as possible. When I woke up in the morning I put it down as a dream but was a bit nervous going to the bathroom.

There wasn’t anything in the hallway, but once I got back in my room the entities called to me. I was terrified again, but when I told my parents they didn’t believe me, said I was dreaming, although I knew I wasn’t when I’d just got back from the toilet.

I have been deliberately vague with my use of the word entities, because that’s the salient point. Had these entities been ghosts or something else recognisably supernatural I probably would still believe it really happened today.

They weren’t ghosts though, they were daleks. When I got back into bed I heard about three or four of them chanting. “Exterminate! Exterminate! Exterminate! You have been attacked by the Daleks.”

Now, as Daleks are fictional creatures from a TV show it clearly was a dream, but that’s the only reason I know it was a dream, because it was so real.

Loved jespah's breakdown, chuckle. But... strange things do happen. Years ago I attended my cousin's graduation party at a home of one of the students. After a bit, I wandered off and entered a room where a woman in her fifties was sitting on an armchair, rifling through a book. As I looked at her, I could see in her kitchen at her table, having a cup of something. I described her kitchen to her, including the wallpaper, small blue ceramic pot of brown sugar complete with wooden spoon, magnets on her fridge, countertops, etc. I asked her if that was her kitchen and she said yes, it was. On that note, she went back to her book and I left. That was a bit strange. An unbidden glimpse into someone's life.