"So the stairs don't always show something that really happened."

That's valuable information.

And she's going to doggedly pursue that line of thinking rather than allowing herself to dwell on the specifics of what happened to her in the visions. She'll make it home someday, find Vi, set it all right, and then none of the dread curling in the pit of her stomach right now will matter.

"Do the stairs merely draw on our memories or extrapolate new ones, I wonder, or are they playing on the sorts of deaths we fear?"