So here's Jackie Torrance in a nutshell:

She named herself after her uncle Jack because her family didn't want to talk about him. Jack tried to kill his family with an axe. She talks about going to the Overlook to write her book.

According to what King actually wrote in The Shining and later Doctor Sleep:

1. Jack never used an axe. He used a mallet.
2. The Overlook Hotel blew up. It is never rebuilt.
3. The official story that Wendy used was that Jack heroically died trying to prevent the boiler from malfunctioning.

So in other words everything Jackie does is a direct contradiction of King's story.

I get that this is basically nerd nitpicking but given that the show makes such a big deal about taking place in Stephen King's universe for them to basically jettison what he wrote and use Kubrick's version in its continuity really frustrated me and prevented me from viewing it as being part of King's canon. (And yeah I know they can just handwave it as "Different levels of the Dark Tower" or something.)