The Returning by Rachelle Dekker
The Returning #3, in the Seer series, by Rachelle Dekker
Carrington and Remko had a baby Elise who was kidnapped in the Authority City. They were forced flee and leave her held captive. Twenty years later, seven members of the Seers warriors are chosen to rescue Elise and the Authority City to its original condition. All this time Elise thought she was abandoned and forgotten. Is she the key to their victory?