Having calculated the precise direction of the beam of light, Wedge now knows the heading that will lead you to Azys Lla. And so, with Lucia's magitek armor safely stowed aboard the Enterprise, you at last resume your pursuit of the Soleil.
As the land of the Vanu disappears into the distance, Lucia reveals her true identity. She is Lucia goe Junius, Garlean defector, and sister to Livia sas Junius, whom you slew in battle. Sensing your discomfort, Lucia claims to hold no grudge against you -- and given her recent performance in battle, Cid is more than happy to take her at her word.
Some hours later, your comrades' calculations are confirmed when the clouds part to reveal the floating isle of Azys Lla. Alas, your progress is halted soon after by a powerful energy barrier which threatens to tear the Enterprise apart. Frustrated, Cid turns the airship around and sets course for Ishgard, lamenting the Allagans' knack for making the simplest of tasks so infernally bloody complicated.
The thought of repairing the Enterprise yet again is enough to fill Cid with dread. On the other hand, any landing you can walk away from...
Lest you wonder, Wedge was able to calculate the heading indicated by the beam of light emitted by the key. If Azys Lla lies in that direction, we'll find it.
The Soleil may have a lead on us, but she's no Enterprise. We'll catch them - you'll see!
Aye, she was my sister—though we spent little time together. After our parents were killed in an uprising, we were sent to live in different households, setting us on separate paths...
Livia felt at home on the battlefield and chose to become a soldier, while I underwent training to become a spy.
My mission. 'Twas believed that the Allagan relics of great worth were stored in the Vault, and I was sent to investigate.
Though I was given little information at the time, I now suspect I was searching for the key we but recently lost. And then I met Ser Aymeric.
'Twas his usefulness to my mission which prompted me to approach him, but I soon found myself drawn to him for other reasons.
He too was a prisoner of his past—judged for his heritage as a bastard son of the archbishop. Yet unlike my sister and I, he did not curse his fate. He simply rose above it.
In time, I came to realize that I had found a man worth following, and a new home besides. And when I subsequently confessed all to Ser Aymeric, he was good enough to accept me into his service.
Ack! And we'd barely finished repairing the damage incurred during our skyfishing trip. On the other hand, any landing you can walk away from, as they say...
I can only presume the Soleil passed through the barrier unscathed. That would certainly explain why the Vanu called it a key...