I SAID SPOILERINOS OMG:
The next situation happens in The Dravanian Hinterlands. The MSQ leads you there, at level 57/58.
So, during the MSQ, you have the chance to bring Y'shtola back from the Lifesteram. As we need someone capable of pierce the shields of Azys Lla's. You bring her back, then she tells you that she lacks such knowledge. Then she refers you to... Matoya. When they mentioned that name, I knew it. It was going to be her.
http://i.imgur.com/ctMzuVw.png
The brooms, the enviroment. SHE was there. Some extra stuff were there:
http://i.imgur.com/XyBDEhZ.jpg
http://i.imgur.com/HW4f678.jpg
http://i.imgur.com/hetd0oS.jpg
Even the music was an arrangement of the original one:
https://www.youtube.com/watch?v=r9_basa73jw
For this, I thank you, dev. team. This was a letter of love for a FF fan like me. :)
For those unfamiliar with her: Click here.