Nikki Bella finally turned heel by attacking Stephanie Vaquer on last week's episode of WWE RAW. She initially came to the aid of Vaquer during a beatdown by The Judgment Day's Raquel Rodriguez and Roxanne Perez before shockingly turning on La Primera.This week, Nikki ambushed the Women's World Champion, who was about to address being attacked by the Hall of Famer last week. As a result, Stephanie Vaquer is scheduled to defend her championship against Bella at Survivor Series. This situation has led many to suggest that the company shouldn't book the 41-year-old to lose to Vaquer.Now, let's explore three reasons why Nikki Bella must win the Women's World Championship.#3. Nikki Bella just turned heel and cannot afford to loseMany believe that Nikki Bella's performance has not lived up to expectations since she returned to WWE for a second run. This led fans to suggest that she needed a character switch to regain momentum in the women's division, as she seemed to be having difficulty doing so as a babyface.Having finally embraced a more sinister side that fans wanted to see, booking Nikki to lose to Stephanie Vaquer would be a major upset to her heel storyline. Therefore, she needs to defeat Vaquer and capture the title to regain momentum and reclaim her place at the top of the women's division.#2. It could allow Brie Bella to returnIf the Stamford-based promotion considers making Nikki Bella a champion again, one way WWE could pull the trigger on this move would be by booking Brie Bella to return at Survivor Series and help Nikki dethrone Vaquer and capture the Women's World Championship.If this happens, it could eventually lead to the reunion of The Bella Twins on WWE RAW. Considering the success the twin sisters achieved in the past, they could help bring more excitement to the women's tag team division on the red brand. Interestingly, they could also kick off a stellar feud with The Kabuki Warriors for the Women's Tag Team Championship.#1. To walk into WrestleMania 42 as a championNikki Bella potentially dethroning Stephanie Vaquer and winning the Women's World Championship could enable her to walk into WrestleMania 42 as a champion. Interestingly, she could gain a lot of support from fans as a heel, possibly earning the main event spot at The Show of Shows.Despite having a stellar career in WWE, Nikki has yet to main event 'Mania, and that could change soon. Hence, booking the Hall of Famer for the win in San Diego could be a great decision from the creative team to allow Bella to earn the main event spot at The Grandest Stage of Them All.