[Mithalwen]

for she is one of my favourites but maybe Galadriel - think of the effect on that toughest of all tough nuts Gimli:

The travellers now turned their faces to the journey; the sun was before them, and their eyes were dazzled, for all were filled with tears. Gimli wept openly.

"I have looked the last upon that which was fairest," he said to Legolas his companion. "Henceforward I will call nothing fair, unless it be her gift." He put his hand to his breast.

"Tell me, Legolas, why did I come on this Quest? Little did I know where the chief peril lay! Truly Elrond spoke, saying that we could not foresee what we might meet upon our road. Torment in the dark was the danger that I feared, and it did not hold me back. But I would not have come, had I known the danger of light and joy. Now I have taken my worst wound in this parting, even if I were to go this night straight to the Dark Lord. Alas for Gimli son of Gloin!" .

The power to make a dwarf cry - now THAT is scary.