[SPOILERS] Why does the WOL have an extra Spirit Vessel?

[Mikita]

You also used G'raha's vessel during the lvl 85-86 story when you...

returned to the first to ask Elidibus about the Elpis flower.

I dont remember giving it back after that, so you would still have it for the first leg of the EW Hildi series.

You're right. I had forgotten about that.

Thank you!