Oh, you're asking about 'Sweet Memory Eve'! I actually came across this one a while back, and honestly, I had to read it twice to really get a handle on the structure. The core plot follows Elara, this young woman who inherits a strange, sentient pocket watch from her grandmother. On the eve of the winter solstice—the 'Memory Eve' of the title—she discovers the watch doesn't just tell time; it lets her revisit her own memories physically. But the twist is, she can't change them, only observe them from a third-person perspective. The main thrust is her trying to piece together the real story of her family's past, which everyone seems to have edited or forgotten, all while the watch's power starts to drain her own sense of self.
It's less a linear adventure and more a fragmented, melancholic puzzle. A lot of the book is spent inside these memory loops—like reliving a childhood birthday party only to notice an adult argument happening in the next room she'd completely blocked out. There's a secondary plot with a scholar who's studying these 'chrono-artifacts,' and he becomes a sort of reluctant guide, but their dynamic is prickly. He thinks she's risking her sanity, and she thinks he's too detached from the emotional weight of the memories. The tension builds because with each memory she fully re-experiences, a piece of the watch cracks, implying it'll eventually shatter and maybe trap her consciousness.
The ending I won't spoil, but it hinges on a memory she's avoided her whole life. The atmosphere is the real star here—it's this quiet, snowy, almost claustrophobic feeling, even in the big memory set-pieces. I remember finishing it and just sitting there, thinking about my own family stories and what I might've misremembered.