Holy shit! Who here has been talking about those red eyes all along? Yeah. Somebody knew there was a little fire mage in her. She was the Broot (Omega Men) from her society of healers. She is now the outcast savior of this arc.
Also, I see the bauble on her belt featured prominently in the stained-glass window. She is clearly some sort of chosen one. It is no doubt some form of healing energy seal/damper that she has promised to carry her whole life to keep her hidden god-like flame-striking powers contained. When she has this flashback in the distant future, she will abandon her healing roots, discard the bauble, and achieve her true potential as a fire mage that saves the day.
Come to think of it, the phoenix resurrection ability makes a lot more sense than the fire thing. That gets Erin and NotCloud back up to complete this story. Forget all that fire mage stuff.
Also, the bauble looks like a circle about 3ft above a the half-dead Robocop/knight, so Half Life 3 confirmed.