Gabrielle is one of the many seraphs liberated from the Arizona farm by Arthur C Phoenix. She is most often seen hanging out around Milan as they travel with Arthur around the world to liberate other seraphs in Eden's farms.
Along with the rest of Arthur's group, she was ambushed by the army that was sent by Eden to kill the whole group. Though she managed to survive, she was left in a coma. When Robin Howard, Luther Stark and Miguel Antonio Batista arrive to visit her in her room, Luther reveals to Bat that she is pregnant with a baby.