Other mistake: It seems strange that Rose the Hat doesn't sense the evil that inhabits the Overlook Hotel when she arrives. When the blood river flows in that hallway, Rose just grins at it, unaware of the danger she is in. As powerful as Rose is, she never sensed Danny's Shining ability back in 1980 even before the events at the Overlook Hotel.
Continuity mistake: Forty years after Delbert Grady manipulated Jack Torrance into attempting to kill Danny and Wendy, Danny brings Abra to the abandoned Overlook Hotel for the final battle against evil Rose the Hat. Danny returns to his parents' old room and looks inside the bathroom. In "The Shining", the bathroom window was left open after Wendy and Danny escaped. Yet in this film the window is closed. This doesn't make sense because everything else in the Overlook Hotel is the same as it was in 1980.
Other mistake: The type of gas pump Danny used when gassing up the car requires the lever be moved from the on to off position before the hose can be placed back into the pump. It is already in the off position before he finishes.