Well, I'm back.
okay... Can't this "light" thing be something about Gildor's "blessing" that he gave Frodo on their meeting as Elf-friend? Goldberry also notices this saying "Gleam(?) in your eyes and ring in your voice tell this." Frodo used to have dreams about the Sea. In Crickhollow he had a dream and we are told that such "dreams often troubled him in his sleep." is there a connection? Any thoughts on this?