Oh, oh fuck.
Well, the little glowing blue person was an ally, however briefly, and Callida has a rule about her allies. They do not die if she has anything to say about it.
She doesn't weigh the pros and cons of her next action, she doesn't even really think through the consequences. She switches off her lightsaber and sprints to the tiny figure's side and thinks maybe I can help him in some way, weigh down in his favor with all of my power -
Except she doesn't really have a way to do that, does she. The problem is not that the figure's not powerful enough, the problem is that the dragon soul is literally too big for anything but it. Okay, well, that's fixable, she can rip it into pieces and try to shove the soul fragments into other things, let the little person have a fairer, less doomed fight. Figure out something to do with the dragon soul-bits later, when they're not in the middle of a crisis. Maybe present them to Occlus, 'Hey look I got you a neat toy.' Where are the darkspawn, she didn't get to killing all of them, she searches for their signatures and -
- in the process she notices that something about her has changed to be like them. That's - alarming, alarming is what that is. Like she's been poisoned with their darkness in some subtle way - was that when she failed to kill the dragon, or was it the ingested blood while she was being thrown around? Doesn't matter. What does matter is that, actually, she fulfills the same requirements that this figure did. If she had killed the dragon, its soul could have - done exactly the same thing to her that it's doing to this one.
And maybe that can be used to her advantage. The figure's doing pretty well against the dragon soul, almost winning, even, she thinks she'd at least manage to match him. And they could both win, if the dragon's power were halved.
"This is stupid, this is so very stupid," she mutters, "I'm insane and suicidal and incredibly stupid and I need to get my savior complex fixed because I'm insane."
Then she reaches out with the Force, grabs at the bundle of energy she recognizes as the dragon's soul, and she rips.