My Sickness Is My Secret Weapon

In my last life, I was a pampered, sickly heiress, betrayed and discarded. My father's embroidery empire was stolen, and I died a pauper, watching everything I loved crumble. Death wasn't the end. I woke up three years in the past, still trapped in this frail body, but armed with deadly foreknowledge. They think I'm a dying flower, easily plucked. They're wrong. My feigned weakness is now my most potent weapon, a perfect disguise to unravel their treacherous schemes and reclaim my family's legacy. I will turn their plots against them, ensure their \"grand funeral\" is for them, not me. But there's one infuriating problem: the famously cold Lord Cui, tasked with my \"care,\" seems determined to bury me properly... He has no idea what he's truly signed up for.