Final answer:
The question seems to be missing correct details or context, as the provided passages do not contain information about Nollie or Katrien. The answer clarifies that the cited text does not give a reason for Katrien's emotional state.
Step-by-step explanation:
Katrien's emotional state when arriving at the ten Boom's house was caused by the news of her housemate Nollie's death. The passages provided do not contain specific information about a character named Nollie or her housemate Katrien, so it seems there might be a mix-up with the text or characters. Instead, these extracts depict different emotional situations faced by characters in their respective stories, which are marked by grief, reflection, and the impact of significant events in their lives.