Why did Nikki Bella betray brie Bella?

Nikki Bella's betrayal of Brie Bella was primarily driven by the storyline in WWE, where personal and professional conflicts often intertwine. The narrative escalated as Nikki sought to assert her independence and success, leading to tensions with her sister. This betrayal was framed as a dramatic plot twist to enhance their characters' arcs and engage the audience. Ultimately, it highlighted the complexities of their sisterly bond within the context of Wrestling entertainment.