This book is really by Cynthia Felice AND Connie Willis, despite what Goodreads lists above. Deza is a con artist trying to pass herself off as a water witch, someone with a supernatural ability to detect, control, and communicate through water, which is a big deal on this dry, poisonous planet. But...
The worldbuilding was fascinating for this one, but I got hung up on how cliched it felt, despite some interesting twists and characterizations. [March 2010]