Rain of Tears (Tales of the Citadel Book 22)

After centuries of waiting, Rain has an opportunity to retrieve a creation that she designed and it means far more than a simple machine should. Her memories are wound around the weather machine and it has been used to destroy the natural order of Jarko.

When she completes her introduction to the local mayor, he ends up leaving office suddenly and his replacement is first a member of the Citadel before he is acting mayor. He is more than willing to help her with the weather machine. Of course, being from the Citadel, there will be a price, but Rain has learned that there always is when it is for something she really wants.