In such a fanfiction, they might initially be hostile. Daenerys, with her dragons and army, could pose a huge threat to Cersei. Cersei, being the shrewd and power - hungry character she is, would likely try to outwit Daenerys. Maybe there would be some intense verbal sparring between them as they both try to assert their dominance over King's Landing.
One possible plot twist could be that Cersei pretends to surrender to Daenerys. Daenerys, believing her, takes Cersei into her confidence. But Cersei is actually plotting a big betrayal from within. She could be secretly gathering her remaining forces and planning to assassinate Daenerys when the time is right.
Power is a common theme. Both Cersei and Daenerys are power - hungry in their own ways in the original series, and fanfics often explore how they either compete or cooperate regarding power. For example, in many fanfics, they fight over who will rule Westeros.
Writing or seeking adult fanfictions involves inappropriate and often unethical content. It's better to focus on the positive aspects of the original characters in the official works, such as their leadership, their growth throughout the story, and their relationships that are suitable for general audiences.
One idea could be a fanfiction where Cersei and Daenerys meet in a diplomatic summit. They start off as rivals, but gradually come to understand each other's motives and the difficult positions they are in. They might end up forging an uneasy alliance against a common threat, like the White Walkers in the original series.
One great 'cersei daenerys fanfic' is 'A Meeting of Queens'. It explores an alternate scenario where Cersei and Daenerys have to form an alliance. The author does a wonderful job of depicting their complex personalities and the power dynamics between them.
In the 'Sansa meets Daenerys fanfiction', it's possible that their first encounter would be tense. But things could change. Sansa might be impressed by Daenerys' strength and determination. Daenerys, on the other hand, could see Sansa as a valuable ally. They could start a new chapter in Westeros where they combine their skills. Daenerys could bring new ideas of justice and equality, while Sansa could ensure the stability and traditions of the North are maintained.
Well, perhaps they could form an unexpected alliance. Daenerys, with her dragons, and Ghost, the direwolf, might team up to face a common enemy. They could use their unique abilities to protect each other and those around them.
There could also be other supporting characters that play important roles in the fanfiction. For instance, Tyrion Lannister might be there to act as an advisor to Daenerys during her encounter with Jon. His wit and political acumen could influence how the meeting between Jon and Daenerys unfolds.
In this fanfiction, Arya could potentially become an ally of Daenerys. Maybe Arya would be impressed by Daenerys' dragons and see her as a powerful force for change. She might offer her skills as an assassin to help Daenerys in her quest for the Iron Throne.