The Decision to Croak.

[Lalwendë]

Arwen has a very special position as she was given the 'choice' - and she would have had this choice even if she had not met and fallen in love with Aragorn - that as the daughter of Elrond, the Half-Elven, she would one day need to decide whether she would be mortal or not. Well, meeting Aragorn seems to have decided this for her, even though it must have been incredibly difficult to accept the eventual loss of her family. I wonder if the actual 'change' to mortality, if there was such a thing, took place at the moment of her decision to die? She lingered for some time, but she was not Numenorean like Aragorn so she did not share that 'gift' of a mortal long life, surely?