Chapter 18: Hermione Calculates What Was Taken

Hermione had not slept.

This was not, in itself, unusual — she had gone entire examination periods on four hours a night and a rigorous application of self-discipline — but it was unusual to have spent the sleepless hours not studying but crouched on the cold stone floor of a dungeon sub-chamber with a lamp at her elbow and a catalogue spread across her knees, reading void-impressions in centuries-old wax dust with a magnifying glass Holmes had lent her without comment when she'd reached for it.

He had not asked for it back. She was choosing to interpret this as trust.