Mike: To me, I always thought Jinora, I saw some different theories that people had of what Jinora was doing, and the truth is, I dont know exactly what she was doing. The idea is that she did gather some sort of spiritual energy that helped trigger the tiny, little sliver of Raava that was left in Unavaatu.
Bryan: She was kind of like a vehicle. She delivered it from the Spirit World and it kind of resuscitated Raava as this little heartbeat.
Mike: Yeah. But she wasnt like gathering pieces of Raava and reformed her or something
But its open to interpretation
We wanted to tie in, all season Korra and Jinoras spiritual journeys we paralleled and to have them combine in the end in a cool way was the goal.