There's a fanfic titled 'Robb Stark's Sister: A Tale with Theon'. In this one, the female Robb Stark character is really strong - willed. She has her own ideas about the future of Winterfell and her relationship with Theon is full of twists and turns. The author does a great job of showing how their different backgrounds shape their interactions. It's an interesting read if you like character - driven stories.
You can start by looking on Archive of Our Own (AO3). It has a vast collection of Game of Thrones fanfictions, and there are likely to be many that feature a female Robb Stark and Theon. Just use the search function and type in relevant keywords like 'female Robb Stark' and 'Theon'.
Another theme could be a romantic relationship. Some fanfictions might develop a love story between them, which often includes elements of forbidden love as their families and loyalties are complex in the original 'Game of Thrones' context. It can be interesting to see how the writers navigate this.
Perhaps a female Robb Stark and Theon are forced into an arranged marriage as part of a political alliance between the remaining Starks and some of Theon's supporters. At first, they resent each other due to their past differences. But as they start to understand each other's motives and the greater good they are working towards, they fall in love. They then have to deal with the internal politics of their newfound union and fend off enemies who want to break them apart.
Gao Da did not betray Qing Yu. Even though he escaped the battlefield in the play, it was to protect himself and Fan Xian from Sigu Jian's pursuit. During his escape, Gao Da found a woman and married her, but the specific outcome was not clear. Therefore, according to the information provided, it was impossible to know why the Gundam had betrayed them.
Qing Yu Nian and Gao Da did not betray him. Although he escaped the battlefield in the play, it was to protect himself and Fan Xian from Sigu Jian's pursuit. During his escape, Gao Da found a woman and married her, but the specific outcome was not clear. Therefore, according to the information provided, it was impossible to know why the Gundam had betrayed them.
Gao Da did not betray in " Celebrating Years ". Although he escaped the battlefield in the play, it was to protect himself and Fan Xian from Sigu Jian's pursuit. During his escape, Gao Da found a woman and married her, but the specific outcome was not clear. Therefore, according to the information provided, it was impossible to know why the Gundam had betrayed them.
Gao Da did not betray Qing Yu. Even though he escaped the battlefield in the play, it was to protect himself and Fan Xian from Sigu Jian's pursuit. During his escape, Gao Da found a woman and married her, but the specific outcome was not clear. Therefore, it was impossible to know why Gao Da had betrayed them.
According to the information provided, Qing Yu Nian and Gao Da did not betray him. Even though he escaped the battlefield in the play, it was to protect himself and Fan Xian from Sigu Jian's pursuit. During his escape, Gao Da found a woman and married her, but the specific outcome was not clear. Therefore, it was impossible to know why Gao Da had betrayed them.
Gao Da did not betray Qing Yu. Even though he escaped the battlefield in the play, it was to protect himself and Fan Xian from Sigu Jian's pursuit. During his escape, Gao Da found a woman and married her, but the specific outcome was not clear. Therefore, it was impossible to know why Gao Da had betrayed them.