The latest episode of RAW saw Nikki Bella finally embracing her sinister side by betraying Stephanie Vaquer. La Primera successfully defended the Women's World Championship against Raquel Rodriguez before being attacked by Roxanne Perez post-match.However, Nikki made the safe and embraced Vaquer before leveling her with the Women's World Title. Given the betrayal angle, it's clear that the WWE Hall of Famer is coming after La Primera's title. This has led fans to suggest that the 41-year-old needs to become a champion again.Now, let's explore three reasons why Nikki Bella must dethrone Stephanie Vaquer to win the WWE Women's World Championship.#3. To establish her heel storylineEarlier this year, Nikki Bella made her return to the squared circle to kick off a second run. However, her comeback has arguably been disappointing, mainly because of poor bookings by Triple H, as she has suffered significant losses in most of her matches.That situation led fans to suggest that Nikki needs a character switch to regain momentum in the women's roster. Having finally embraced her dark side on the latest episode of RAW, the Hall of Famer somewhat needs a potential Women's World Championship victory against Stephanie Vaquer to establish her heel storyline.#2. To earn the main event spot at WrestleManiaDespite the legacy Nikki Bella has built in the Stamford-based promotion, she has yet to main event WrestleMania. Given the success Nikki achieved during her tenure as the Divas' Champion, many believe she has the potential to main event 'Mania in the future.Considering that, the company should consider booking the Hall of Famer to dethrone Stephanie Vaquer and possibly extend her reign until WrestleMania. If that happens, she could garner strong support from fans as a heel and have a chance to earn a main event spot at the Show of Shows.#1. Could lead to Brie Bella returning to reunite with Nikki BellaIf WWE ultimately books Nikki Bella to capture her first championship since her return to the squared circle, it could eventually lead to Brie Bella's comeback to the Stamford-based promotion to reunite with her twin sister and reform The Bella Twins.Since Nikki and Brie achieved notable success as a team in the past, they could help bring much more excitement to the women's tag team division on WWE RAW. Interestingly, the twins could also set their sights on the tag team title.