The Lost Princess's Revenge

Stella Shaw and her mad mother, Iris Sloan, are persecuted. Saved by the Emperor, Stella discovers General of the North Zane is an imposter who usurped his position. Iris is the Empress Dowager's daughter. Zane and fake princess Aurelia plot to frame them. Stella gathers evidence. Truth revealed, villains brought to justice. Iris regains sanity, ennobled as Princess Regent. Stella ennobled as Commandery Princess. Mother and daughter achieve happy ending.