Make a catch-up guide using only the notes or excerpts below, within my stopping point. Cite the supplied chapter or note for every statement. Separate observed events, character claims, and open questions. Do not browse, draw on later plot knowledge, or hint at future revelations. If the source does not answer something, say it is not established here.

MY MATERIAL AND CONSTRAINTS
Fictional story notes, through chapter 2: In chapter 1, Mira finds a blue key. In chapter 2, Tomas says the locked room belongs to his aunt; Mira doubts him. No other information is supplied.