DD was almost Galadriel too- but at the last minute decided to be a bottle of Sriracha sauce (uhhh....because 13yos are more likely to recognize that?). She also had the "what are you" reaction last year when she was the leader of the knights who say Ni- at least I think some of the teachers got it.

I have to say that as she has gotten older Halloween has gotten easier- not because the costumes are less elaborate but because she can do most of the planning/crafting/sewing herself, thank goodness.