The Decision to Croak.

[Firefoot]

I do find it interesting that while Aragorn fully accepts that he must make this decision and he accepts it with good grace, Arwen finds it much more difficult and lingers for quite some time, as though she can't quite shake off what she had accepted through the long years before meeting Aragorn would be her 'fate' as an Elf.

I agree. I think that this has something to do with the fact that because Aragorn was born mortal, he had always had some notion of death; his father died when he was very young, and he had the experience of his mother's death, as well as numerous others of friends and kin. Maybe death was more of a fact of life to Aragorn than to Arwen - it was one thing for her to say, "Yes, I'll remain mortal with you," and quite another for her to experience it. She did not have the same experience with death as Aragorn - she spent her time with the Elves, and even when she lost her mother, Celebrian didn't die; she "just" passed into the West. She parted with Elrond, but he still lived. She even says it herself:

"But I say to you, King of the Numenoreans, not till now have I understood the tale of your people and their fall. As wicked fools I scorned them, but I pity them at last. For if this is indeed, as the Eldar say, the gift of the One to Men, it is bitter to receive."

Even though Arwen had accepted the reality of mortality, she still seemed to view it with a distanced Elvish perspective.