In the outdoor season, Taylor came first at the Mt. SAC Relays and again finished third at the Outdoor U.S. Championships. However, she encountered the more illicit side of track and field at the championships as she was offered the banned substancemodafinil. She claimed that she was "the only person that didn't take it".[7] One of her competitors, Sandra Glover, was among those later banned for taking the drug at the championships.[8] Taylor was chosen to compete at the 2003 Pan American Games and she finished fourth behind Andrea Blackett in the 400 m hurdles final. Taylor attended track and field meetings in Europe, coming third in Zagreb and taking fourth at the Weltklasse Zurich in a personal record time of 54.92 seconds.[3] She qualified for the 2003 IAAF World Athletics Final and finished in fifth place, running 54.93 seconds.[9]
Taylor reached the pinnacle of her athletic career in 2004, beginning with a win at the Mt. SAC Relays in a meet record time,[10] and a personal best beating run of 54.36 seconds for second at Golden Spike Ostrava. At the 2004 United States Olympic Trials she improved even further, finishing as runner-up to Sheena Johnson with a time of 53.36 seconds.[3] Gaining her first ever berth on the Olympic team, Taylor set her sights on the 2004 Athens Olympics. Taylor reached the Olympic hurdles final and took seventh place with a run of 54.97 seconds.[11] She closed the season with a bronze medal at the 2004 IAAF World Athletics Final. Her new best time of 53.36 ranked her as the fifth fastest 400 m hurdler of 2004.
Taylor has a twin sister, Lindsay Taylor, who competes in the pole vault.[12] Taylor abruptly stopped competing in professional athletics after 2004.[9]