Tanya Battles was a fictional novel. The plot and characters were created by the author and did not exist in the real world. Therefore, the plot and whether the characters in Tanya's Battle Chronicles were choosing their heirs were all set by the author and not true facts. As a fictional novel, its plot and characters are all created by the author, and we can understand and interpret it according to our own preferences and imagination.
I don't have enough information to know exactly who Tanya is in this story. She could be a fictional character created for the story, or it could be based on a real person named Tanya.
Well, since we don't have a lot of details about the 'Tanya Koch story', it's difficult to say precisely who she is. She might be a character in a local tale, a family story, or even part of a business - related narrative. Maybe she's a creative individual like an artist or a writer, or she could be someone who overcame a challenge in her life that the story focuses on.
One possible plotline could be that Tanya is forced into a situation where she has to adapt to 'being X'. For example, if X is 'a magical being', she might have to learn new powers and deal with the social implications in that new state.
I'm not sure specifically which 'Tanya becomes being X fanfic' you are referring to. There could be many different interpretations of this. You might want to check on some popular fanfic websites like Archive of Our Own (AO3) and search using those keywords.
Tanya and Bella might be characters from a popular book or movie series that the author of the fanfiction really likes. For instance, they could be from a vampire - related series, where the actions like handcuffing could be related to the power dynamics or the complex relationships within that world. They could also be from a mystery or thriller - type of story, where this act is part of a larger mystery or plot twist.
Tanya's fate varies depending on the specific novel. Sometimes she faces challenges and overcomes them, while in others, she might encounter unexpected setbacks.
They could be two characters from an existing fictional universe that the fanfiction is based on. Maybe they are rivals within a group, or they have different loyalties that put them at odds with each other.