World Whisperer Series by Rachel Devenish Ford

Seven years ago, Isika’s mother walked out of the desert with three children in tow, leading the priest of the Worker village to marry her and take in her children. In all those years, fourteen-year-old Isika has never been able to fit in as a Worker or live up to her role as the priest's daughter, and worse, she has been helpless against the tragedies that have fallen on her family... moreSeven years ago, Isika’s mother walked out of the desert with three children in tow, leading the priest of the Worker village to marry her and take in her children. In all those years, fourteen-year-old Isika has never been able to fit in as a Worker or live up to her role as the priest's daughter, and worse, she has been helpless against the tragedies that have fallen on her family. But now the four goddesses they serve want another sacrifice, and Isika's stepfather has chosen the next child to be sent out to sea: the little brother who Isika loves more than anything. This time Isika will not be powerless. Together, she and her two remaining siblings leave the walls of the Worker village to save their brother, traveling into unknown lands and magic they never could have imagined. less

A poison arrow. A prophecy of two sisters. A journey into the heart of the resistance.While Isika is preparing for her future role with the Maweel, members of the Karee tribe come to ask for help with the problem of masses of disappearing people. Meanwhile, Aria grows weaker daily from the poison arrow lodged inside her, and time seems to be growing short... moreA poison arrow. A prophecy of two sisters. A journey into the heart of the resistance.While Isika is preparing for her future role with the Maweel, members of the Karee tribe come to ask for help with the problem of masses of disappearing people. Meanwhile, Aria grows weaker daily from the poison arrow lodged inside her, and time seems to be growing short.A disturbing Karee prophecy might contain more answers, and as Aria is pulled deeper into the Desert King's trap, Isika races to find a healer who might be able to save her sister. In the most dangerous places, she finds more help than she expected, and the group of friends grows and changes as the Resistance enfolds them all.Isika has resisted the power of the Desert King, but will Aria fall under his sway? less