CHATTANOOGA,Tenn. - Sarah Fulp-Allen of the SFPG Club, Brandy Rosenbrock of Warren, Mich., Erin Tomeo of Grove City, Pa., and Toccara Montgomery of Cumberland (Ky.) University earned their second consecutive titles in the FILA Cadet and Junior Women's Nationals today at the Camp Jordan Center.    Fulp-Allen, a champion in the Cadet event last year, was the only wrestler to win titles in both age groups this year, taking both titles at 46 kg/101 pounds. Fulp-Allen won a pair of matches in each event. She pinned Caitlin Chase of Bloomingdale, Ill. in the Cadet final at 3:51 after shutting out Rachel Holthaus of the Hi-Flyers Club 9-0 in the semfinals. In the Junior event, she won by technical fall over Monica Harris of Missouri Valley College in the semifinals, then prevailed 13-8 over Gina Heinzelman of Saginaw, Mich. in the title match.    The other three repeat champions came from the Junior event. Rosenbrock, who won both titles a year ago, won the 58 kg/127.75-pound Junior title with a 9-1 victory over Cathilee Albert of Team Colorado. Tomeo won at 63 kg/138.75 pounds by pinning Issa Alvarez of Williamsburg, KY. in 39 seconds, and Montgomery also won at 68 kg/149.5 pounds.    Natasha Umemoto of Portland, Ore., completing her sophomore year at David Douglas High, was selected the Outstanding Wrestler in the Cadet Division after scoring an 11-0 technical fall over Silvia Cortez of Hanford, Calif. in the semifinals and pinned Alysse Straudjord of Minneapolis, Minn. in 1:00 of the championship match at 52 kg/114.5 pounds.    Katrina Betts of the University of Minnesota-Morris scored a 10-7 decision over Mary Kelly of Mahomet, Ill., a former Cadet World silver medalist, in the championship match at 50 kg/110 pounds and was selected as the Outstanding Wrestler in the Junior Division. Betts scored two pins to reach the finals, in 3:13 over Kristin Fujioka of Wahiawa, Hawaii in the quarterfinals and in 1:20 over Kera Pemberton of Neosho (Kan.) JC. Kelly also reached the finals with a pair of sub-minute pins and earned the Most Falls Award with 2 in 1:01.    Brooke Bogren of Carbondale, Kan., who won the Most Falls Award last year, added the 54 kg/118.75-pound title to her collection this year with a 6-4 victory over Jillian Yost of Team Knapp. Bogren pinned her first two opponents.