The "if's" of the three Elven-Rings

[Formendacil]

Originally Posted by Gorthaur the Cruel

But if what you say is true, why would she desire the Great Ring... seeking to supplant the Dark Lord (before she passed the test).

Galadriel is trying to re-create "perfect" in middle-earth. That does not mean that she herself is perfect. Prior the very creation of the Rings, Galadriel's desire is a kingdom in middle-earth, and widespread power. This desire is still present in the back of her mind at the end of the Third Age. In addition, remember that the temptation of the One Ring for Gandalf would be "to do good". Perhaps for Galadriel the temptation it offers would be supreme power in middle-earth (well, duh!), in which she COULD re-create "perfect". She couldn't, of course, but temptations don't necessarily have to truths.

Fortunately, Galadriel has had an Age of trying to create "perfect" with Nenya. She realizes that to do so is impossible, and so is able to resist the temptation of the Ring, and pass the test.

Originally Posted by Gorthaur the Cruel

Why would she be troubled with the idea that her realm could possibly fade if her longing was towards the sea?

The Elves are very uniquely tied to lands that they live in. This bond would only be intensified by having had a measure of success in re-creating that land in the image you wanted.