The Moonlit Contract of Wolf King Uncle

When werewolf heir Victor dies, his human widow Violet is taken to Moon Shadow Castle, where she finds herself living among a powerful pack she never expected to join. Pretending to be unaware of the danger around her becomes her only shield, yet the castle's uncle figure, the Wolf King, seems to see straight through her careful act. The source ends mid-thought, so this retelling stops at the arrival and the tension it creates.