CofL49, this reading

[Mark Kohut]

I am noticing the grammatical tense shifts, so barely, subtly
indicating different time periods...esp. a just ahead future (from within the time of the sentence)......................
Examples:

1) "as things developed, she was to have all manner of revelations".........

2) "That's what would come to haunt her most, perhaps, the way it fitted, logically, together"

3) p. 117 "Later, possibly, she would have trouble sorting the night into real and dreamed."
 
All of these future times sometime before the locked room end?