The Jade Pirate — Deborah Cannon

Everyone agrees that Elizabeth Latimer's dad drowned in a vicious squall while out sailing. But when he turns up alive in modern day China four years later and is kidnapped by a modern day pirate who threatens to sell the secret of the Vortex to the Chinese government, Liz leaps into the past to chase down the kidnapper, only to learn that he has married the pirate witch Mrs. Cheng. Her mission: to fix the timeline and reunite Mrs. Cheng with her true love. Book two of the Elizabeth Latimer, Pirate Hunter series