In fanfiction, Lysa Arryn could be paired with Varys. Varys is known for his web of spies and political maneuvering. A story with them together could involve Varys trying to use Lysa for his own political ends in the Vale or Lysa trying to outwit Varys. Another great pairing could be with Brienne of Tarth. Brienne's sense of honor and Lysa's more self - serving nature could create an interesting dynamic. They could be in a situation where Brienne has to protect Lysa or Lysa has to decide whether to trust Brienne. And of course, Tyrion Lannister could be paired with her. Given Tyrion's intelligence and Lysa's paranoia, a fanfiction exploring their encounters and how they interact could be full of drama and unexpected twists.
I'm not sure specifically which 'lysa arryn lemon fanfiction' stories are out there. But generally, in fanfiction, it could explore different aspects of Lysa Arryn's character, perhaps her relationships in a more creative and uncanonical way.
Archive of Our Own (AO3) is a good place to start. It has a wide range of fanfiction, and you can search for Lysa Arryn - related works there. Just be sure to use the correct tags.
I'm not sure specifically about 'lysa arryn x jaime' lemon fanfiction. Fanfiction can be quite diverse, and it might be difficult to find good ones of this particular pairing. You could try searching on some popular fanfiction websites and look through the reviews to find well - received stories.
One interesting fanfiction could be about Lysa Arryn's early life in the Vale before the events of the series. It might explore her relationship with her family and how it shaped her into the character we see in the show. Another could be a what - if scenario, like what if Lysa Arryn had allied with a different house instead of the Lannisters. There are also fanfictions that focus on her relationship with Littlefinger in more depth, showing the manipulations and her emotional turmoil in that relationship.
Another theme might be redemption. Jaime is often seen as a character in need of redemption, and his relationship with Lysa could be a way to explore that. Maybe through their connection, he starts to make amends for his past actions, and they both grow as characters. Also, loyalty could be a theme, as they both have loyalties to different houses and people in the story.
Since we only have the name 'tully novel', it's difficult to say who the author is. It could be from a small press or even a local author. Without more context, we can't really identify the person behind it.
In this 'Arryn Another Claimant' Game of Thrones fanfiction, Arryn could potentially be a new character created by the author. Maybe Arryn is someone who believes they have a legitimate claim to the Iron Throne, perhaps related to an old and forgotten branch of a noble house in Westeros. Without reading the fanfiction in detail, it's hard to say exactly who this Arryn is, but it's likely they will play a significant role in the power struggles and political intrigue that are hallmarks of Game of Thrones stories.