[It isn't at all that he doesn't want it back--he's literally missing a part of himself, he's stuck in a body that isn't his, he's so much weaker than he should be--but he's prioritizing. He's weighing facts and logistics instead of emotions, and the facts are that if this truly does come to a fight, many could be hurt. People Castiel actually cares about, all in a fight over his grace.

It's only the threat that the same people and more will be harmed if they don't act that makes it worth the attempt.]

Not directly. Enough people are about to be, and I have no desire to add her to that list. I would have dealt with this myself if I were capable.

[It's a major blow to his pride to say, but this entire situation is, and he might as well admit it. If he could have sorted this out on his own, he would have done so.]