"It is brand new information! I never heard anything about this, and I wouldn't forget something like that! When did it come up?! Is this a thing like Pidge being a girl, where half the team knows and they assume the rest of us figured it out?!"

As far as getting over it? No, Allura is not over it. In fact, it looks like things are very literally back to square one, there.

"Wait, hold on. You mentioned something else. The Blades of... Mam...ara...?" She can't even remember how it's pronounced. "I don't remember any allies by that name."