The Sickly Bride's Clockwork Revenge

Zivena woke up coughing blood at a lavish engagement banquet. The guest of honor? Her young daughter, Nika, being forcefully betrothed to a wheezing septuagenarian by Zivena’s greedy in-laws, who had conveniently left Zivena in the snow to die. Instead of weeping, the famously sickly woman deadpan-calculates the precise structural weakness of the banquet hall's chandelier to drop it on the patriarch's head. Armed with a time-dilated mental library of future technological blueprints - and a healing spring in its lobby - Zivena begins a systematic, hilariously brutal destruction of the Varga family's social standing. She cures her estranged, crippled veteran husband with the magic water, accidentally turning the stoic man into a fiercely loyal attack dog. But as she delves deeper into the blueprint library, she discovers sticky notes written in her own handwriting. She didn't just stumble into this era; her past self orchestrated this exact transmigration. Why would she intentionally trap herself in this retro nightmare, and what catastrophic event was she preparing for?