Lost in some mountains

[Galin]

Anyone want to try his or her hand at the meaning of (Galadriel speaking in The Lord of the Rings):

'He has dwelt in the West since the days of dawn, and I have dwelt with him years uncounted; for ere the fall of Nargothrond or Gondolin I passed over the mountains, and together through ages of the world we have fought the long defeat.' ... considering that Celeborn, at least as published by JRRT himself, is ultimately Sindarin (not Nandorin), and that according to another Tolkien-published account, after the defeat of Morgoth, Galadriel: '... passed over the Mountains of Eredluin with her husband Celeborn (one of the Sindar) and went to Eregion.' The Road Goes Ever On

I'm aware that Tolkien changed his mind about the history of these two characters, but since he published both descriptions, and since he never revised the passage from The Lord of the Rings, I'm wondering how people attempt to merge the two into one internal tale.

If people do, that is