If it makes you feel better, and you didn’t already know, that didn’t really happen in the books. They decided to march to war on their own with no hesitation and no conversation about it with Merry and Pip.

Galadriel had nothing to do with Gondolin but she was definitely in Beleriand at the time. She was around to experience the light of the trees and make her way to Middle Earth with the Noldor.