The Witcher 3 - Yennefer's wish for the future

If you reaffirm your love to Yennefer through the game, you get this scene near the end of the game at the nilfgaardian camp at Skellige.

If you want to talk about Yennefer of Vengerberg more in detail, come to the official forums:
forums.cdprojektred.com/threads/58120-Yennefer-of-Vengerberg-(all-spoilers)-The-Revival