"I believe we can safely say 'long before you were born'." An exact year was likely not necessary, beyond that fact. If she hadn't even heard of a time when a whole Jedi Order had defended the galaxy, she was either from far enough in the future that his now would make no sense, or far enough in the part that hers would mean nothing to him. "My name is Qui-Gon Jinn. And you are?"