ARR Relic "The Vital Title" quest bugged?

So I'm helping my mom get her first relic, the ARR Bard relic. She's currently on the free trial and has managed to get all the way through every step of the relic and has now finished the final Mahatma and was told to go speak with Jalzahn. Her next objective is the quest The Vital Title. But... it stays red and keeps giving an error. When she clicks on it, it says that she needs a Zodiac Weapon Zeta equipped... but when I look up how to get the Zeta weapon, everything says that you get it from that quest. So... HOW? I feel like I must be missing a step. But everything just says that when the 12 mahatma are complete you just talk to Jalzahn and take the quest The Vital Title to get the Zeta weapon. But the game is telling me she needs to have the Zeta weapon equipped to start the quest. I'm so confused! Does anyone know what's going on?

And yes, we've double checked that all 12 mahatma are complete and they are. The guy at Swiftperch says that she's already completed them all if she tries to select the Yoichi Bow again.

Would hazard a guess that user needs to unequip the Zodiac weapon, having completed all mahatmas, to allow Jalzahn to provide "Zodiac Weapon Awakening" to upgrade to the Zeta weapon. The Vital Title quest does not reward any weapons.