Maurice fully utilized his verbal skills and subtly confirmed many issues with Garland through seemingly casual conversation.
During the interaction, he and Duncan gradually ascertained the condition of this female apprentice.
As for the shipwreck Brown Scott encountered six years ago and all memories related to his mentor's death afterwards, they had completely disappeared from Garland's mind.
No, it wasn't just the memories that had vanished, but the entire cognitive system that accompanied them—
The death of a person triggers a chain reaction, including ripples within social circles, arrangements for posthumous matters, long periods of reminiscence and emotional fluctuations, and the various changes that have occurred in this house over the past six years; these can't be solved by simply deleting and replacing a segment of memory.