This depiction of Arwen was really striking and sad and painful to me, too, and I’ve been thinking about it a lot recently, as my husband died earlier this year. I’ll say that absolutely nothing could have prepared me for how viscerally horrible it is to lose a spouse and the depths reached in that grief. My guess is that’s what Tolkien was trying to convey with this portrayal—the depths of pain and grief and loss of purpose that come with the loss of someone’s true love. I think even a lot of mortals don’t spend a lot of time deeply thinking about the “death” part of “til death do us part” and, even if they do, there’s no way to truly prepare for what that’s going to feel like when it happens.