The ending could have been Ciri is now able to train her skills in relative safety and begins honing them so she can one day stop the White Frost and pay off her debt to Avallac'h (make the White Frost a threat only to Tir Na Lia instead of the whole galaxy space time). Then she goes off exploring the world as a witcheress until she feels she's ready.
Or in the Empress ending she dedicates herself to this world, leaves Tir Na Lia to it's fate while slowly shaping the kingdoms, now all part of the empire, into a better place.
Eh, the problem with that is I think the game is trying to tell us that Ciri is not Geralt's little girl anymore and is a badass. The Wild Hunt isn't supposed to be afraid of Geralt.
In the end, they should be afraid of HER.
Kind of like if Star Wars ended with Obi-Wan Kenobi blowing up the Death Star.
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Somehow whenever I think about "What happened inside the White Frost?" I can't help but picture Ciri having a conversation with Ghostchild.
Imo just leave the entire thing alone and let's never talk about it again >_>
White Frost: You may choose the Blue ending where you kill all of the elves in the universe along with Dandelion.
Ciri: Wait, what?
White Frost: This is the happy ending. Then you may choose the evil-ish Red ending where you don't commit genocide.
Ciri: Oh good.
White Frost: This is where you become Empress of the Universe by merging with the White Frost and dominating all planets with the power of cold.
White Frost: Then there is the Green ending where you merge the White Frost, Humans, and Elves into one species because Humans and Elves and Ice Monsters cannot live together in peace.
Ciri: That's a horrible idea. Also stupid. Can I just punch you?
White Frost: No, then I'll kill everyone in the universe.
Ciri: Screw it, I'm getting some mods.
White Frost: FINE! BE THAT WAY! You can forget about getting your own game now! We'll have some unnamed generic sexless NPC be the protagonist! The players can make their own character and he'll have generic good, evil, and noncommittal dialogue yet everyone will act like he's the messiah!
Ciri: *flips him off*