Not sure what point you were trying to make about Shadow heart.
Putting aside that companions generally don't react according to some "good" or "evil" approach but have specific opinions about specific topics, since the beginning she's always been in favor of
resolving things avoiding conflicts when possible and (as a "street urchin" background) , showing a charitable attitude toward children.
Also, when I left to her the decision she actively chose to NOT kill the Aasimar, so arguing as she's someone who basked into solving that scenario with blood is more than a bit puzzling.
That aside, yeah, the framing of the "refugee vs residents" was clearly intended to reflect "real-life equivalents" and it can't really be said the writing has been subtle in that area.
Quite frankly ham-fisted, in fact.
