Forgive my ignorance as I haven't yet read the books, but why couldn't Arwen take off to Valinor after Aragorn died? Why did she have to roam around Middle Earth forever after that? It seems that Arwen could hang out with Aragorn for a hundred years or however long he lives, raise their kids, then take off. I heard that Legolas and Gimli sailed off later anyway so there's gotta be at least one more boat. This way at least she could see Elrond again. What was keeping her from reuniting with the Elves in Valinor?