Fans often show Sansa becoming more resilient. After all she's been through with Ramsay, she becomes a stronger person. For example, she might start to take more risks in her plans to get free from him.
In fanfiction, Sansa's development can be greatly influenced by Sandor. She may start to question the traditional ideals of beauty and chivalry that she once held dear, seeing the realness in Sandor. Sandor himself could develop a sense of purpose beyond just being a fighter. Their interactions could be the catalyst for these changes. For instance, Sansa might encourage Sandor to use his strength for more noble causes, and in turn, Sandor could help Sansa find her true voice in a world that has silenced her for so long.
Sansa would likely become more determined and resourceful. The pregnancy would force her to think not just about her own survival but also about the life growing inside her. She'd have to be stronger to face Ramsay's madness.
Their relationship could be explored by focusing on Ramsay's insecurities. Maybe Ramsay is actually secretly in love with Sansa in a very twisted way, and his abuse is a result of his inability to handle his feelings. Sansa, on the other hand, could try to use this knowledge to manipulate him.
Another plotline might involve Ramsay having a change of heart due to some unexpected event. For example, he could be haunted by his past deeds and start to treat Sansa differently. However, this would be a very complex and controversial change as he is such a cruel character. In this scenario, Sansa would have to decide whether to trust this new side of Ramsay or still seek her revenge.
Sansa could grow in terms of her resilience. The pregnancy in such a terrible situation with Ramsay would force her to become stronger. She would have to find ways to protect not only herself but also the unborn child, which could lead to a more hardened and strategic Sansa.
The OC could introduce new ideas to Sansa. For instance, if the OC is well - traveled, they might share stories of different cultures and ways of life that make Sansa more open - minded. This could help her grow out of her more sheltered view of the world.
Well, it could start out very tense. Ramsay is cruel and Sansa is a victim. But with the presence of a baby, Ramsay might start to show some unexpected softness towards Sansa. He may not be as violent as he used to be towards her.
One plot idea could be Sansa using her wits to outmaneuver Ramsay in the political arena of Winterfell. She could secretly gather allies among the servants and smallfolk who have been oppressed by Ramsay. Another could be a scenario where Ramsay tries to break Sansa's spirit but instead she finds an inner strength that he never anticipated, leading to a power struggle within the walls of the castle.
Sansa Stark is a complex character in Game of Thrones fanfiction. She starts as a naive girl dreaming of a fairytale life. In fanfiction, she often evolves into a strong, politically astute woman. Writers explore her growth from a victim of circumstance to a shaper of her own destiny. For example, some fanfics might focus on how she uses her knowledge of the courts to outwit her enemies and gain power in the chaotic world of Westeros.
Theon Greyjoy can also be an interesting character to pair with Sansa. Their complex relationship can be developed further in fanfiction. Maybe Theon is trying to make amends for his past actions towards Sansa and they end up forming an unexpected alliance to face common enemies.