The point here is, Murphy was able to see beyond the very suspicious behaviour Harry was exhibiting in Skin Game (which Butters couldn't, but listed out very succinctly), because she trusted that Harry was still, at his core, the same person. I can't see Harry not doing the same if Murphy comes back with some minor changes in her outlook. I'm confident that at her core, she'll still be the same person, just as Harry is still the same guy from book one where it counts.
Yes, exactly.
Besides, so far,
in the books, Einherjar don't seem like a brainless soldiers, they seem to enjoy the battle, yes, as we see in Battle Ground, but we also have instances in Ghost Story and Peace Talks, where they seem just like any other person.
I'm curious, what do you make of this comment by Gard to Harry? It's from Changes where they go to Odin's stronghold in the mortal world (Ch21):
“The leader of the guards eyed us both suspiciously for a moment, then said something quietly and all the rifles stopped pointing at me. Two guards returned to stand on either side of a doorway. Two more took up a station facing Gard and me, evidently cautious about getting more company through the same Way we'd just used. The rest returned to a couple of card tables and a few sleeping cots.”
“Einherjar. Give them a little sip of renewed mortality, and four thousand years of discipline go right out the window”
The whole passage in Changes about this is intriguing in light of what Murph is supposed to be now.
Also, Molly is another character that has gone through
some things, to say the least, and she is the one character that acquired a mantle that is actually meant to completely change
who and what she is, and yet, she's still herself, mostly. Why would Murph be the only character to do a 180? Besides, what exactly would be the point of recruiting her for who she is if the "mantle" (to call it something) of the Einherjar is going to undo her, right?
This argument that somehow, "she's gonna come back wrong" alla Buffy, doesn't really hold-up, at least until we see the aftermath in the coming books and how much of the norse mythology that we can look up on google is sustained in the books. So far, Jim has twisted different myths at his convenience.