Red Hood and the Outlaws (Renaissance), book 6: Lost and Found
Scott Lobdell et Collectif2015

They began as outcasts; they became Outlaws. Over the last few years, Red Hood, Arsenal, and Starfire have survived encounters with all types of evil, forging bonds that have held them together as a team, and as friends. But even the strongest of friendships is susceptible to the reopening of old wounds, and a secret from the past is about to tear this trio apart.

The team encounters a spaceship broadcasting a message for Princess Koriand'r, known to Earthlings as Starfire. What she finds within the vessel stirs up memories of a time before she came to this planet, a time when she traversed the stars freeing those enslaved as she once was. What she finds is the horror of all those attempts at fighting oppression turned to cinder. And what she finds within herself is a burning rage long suppressed, a fire that can no longer be contained.

She heads out on a hunt for bitter vengeance, and it's up to Red Hood and Arsenal to stop her before she take a course of action form which there is no coming back: Murder!
(Collects issues #32-34 and ANNUAL #2)