Who buries Arwen?

[Voronwe]

The tale of Aragorn and Arwen, like the rest of The Lord of the Rings, is presented as part of the Red Book of Westmarch. The end of the Tale of Aragorn and Arwen reads thus:

Here ends this tale, as it has come to us from the South; and with the passing of Evenstar no more is said in this book of the days of old.

Consider that someone, at least, must have known of the death of Arwen, otherwise no report of it could have been brought to the Hobbits and been included in the Red Book. Presumeably this person could also have buried Arwen.