Vengeance from Ashes — Sam Schall

First, they took away her command. Then they took away her freedom. But they couldn't take away her duty and honor. Now they want her back. Captain Ashlyn Shaw has survived two years in a brutal military prison. Now those who betrayed her are offering the chance for freedom. All she has to do is trust them not to betray her and her people again. If she can do that, and if she can survive the war that looms on the horizon, she can reclaim her life and get the vengeance she's dreamed of for so long. But only if she can forget the betrayal and do her duty.