katcrave wrote...
Being 'overwhelmed by sentimentality' is entirely dependent upon the circumstance. Once we've established that, yes, she is capable of feeling emotions and of being sentimental, then its just a matter of finding the threshold of where her emotions will override her pragmatism. A base of liquified humans (she did witness one of the colonist/crew members being processed) might just do the trick. Its certainly within the realm of reason to accept it as such anyway.
The evidence you presented such as Miranda being appaled by corpses on the Collector Cruiser are simply nothing new. We knew Miranda values human life from the very beginning "I just hope it was worth it. Lots of people lost their lives in that station."
However, during the game she consistently is shown taking the more practical solution, even if that means sacrificing others.
The situation at the Collector Base is different still. This is not a pragmatic dillema such as "Torture David Archer and prevent a war or release him" where there is an obvious gain but something must be sacrificed in return. The Dilema at the CB is entirely moral and I can think of three similar situations that we could compare it to.
The Geth have killed millions of humans. Does Miranda think Legion should be destroyed? No, she wants to study it.
The man she loves is being held in an Alliance prison. Does she break in to see him? No, she stays aways because that would practically be an admission of guilt to the Alliance.
Thousands where killed at Sanctuary. Does Miranda think the research should be destroyed? No, she lets Shepard upload it and use it for the good of others.
Thus, we have nothing in both games that support Miranda placing sentimentality over efficiency and we have, at least, three different examples that directly contradict this. As such, I am quite confident in my belief that the "Betrayal" line is no more than a quite flagrant case of OOC.