Nidia won a year's contract with the World Wrestling Federation after she co-won the first season of Tough Enough, a show meant both to be a "WWF Superstar" talent search, and a semi-documentary of the difficulties of being a trainee professional wrestler. Guenard made a few appearances on WWF episodes in 2001.
Nidia debuted on the SmackDown! brand on the June 6, 2002 episode, in a backstage segment with The Hurricane and Jamie Noble, which Noble and Nidia then became an on-screen couple undergoing a trailer trash gimmick, with Nidia wearing cutoff jean short shorts and Keds worn on bare feet. They were both playing as heels, with Nidia leading Noble to several wins, due to interference during the matches. At the King of the Ring she led Noble to winning the Cruiserweight Championship from The Hurricane. She then began to feud with Smackdown! Diva Torrie Wilson leading to many solo and mixed tag team matches with Guenard and Noble against Wilson and various other cruiserweights, including Funaki, Billy Kidman, Rey Mysterio, and Brian Kendrick.
On the October 16, 2003 episode of SmackDown! Nidia was blinded by Tajiri during a match between Tajiri and Noble, after which Tajiri spewed his "Green mist" onto her face. Storyline-wise, this encounter resulted in a physical 'injury' to Nidia. After recovering, Nidia started appearing at ringside with sunglasses on, to 'sell' the after effects of her injuries. During this time, Noble would throw Nidia in front of various opponents at a match's climax, to both save himself and let him later accuse them of "hitting a woman", etc. Later in this storyline, Rey Mysterio revealed to Nidia that Noble was exploiting her in the aforementioned manner, resulting in Nidia turning against Noble and becoming a fan favorite in the process. The two feuded, culminating in a match at No Way Out in which Noble had to wear a blindfold. True to character, Noble cheated to win as he removed his blindfold during the match.
Nidia was drafted to the Raw Brand on March 22, 2004. She became a face and claimed to be excited that she was drafted to Raw, where she can compete for the WWE Women's Championship. She made her debut match on the March 29, 2004 episode of Raw, defeating Molly Holly. She then tag teamed regularly with Stacy Keibler and Victoria against heels Trish Stratus, Gail Kim, Molly Holly and Jazz. With the shift to Raw also came a change in character, as Nidia's Hispanic heritage was played up; to this effect, she was no longer billed as being from the South but instead she was billed as being from Puerto Rico and she no longer spoke English during promos, instead speaking Spanish in a quick and angry fashion. Nidia was released from her WWE contract on November 3, 2004 along with several other performers, in a routine purge of talent.