Betrian made had her professional fight in 2005 against Marouska Pruynboom. She lost a unanimous decision. In 2007, she scored a TKO win over Suheyla Ozturk to win the MON Women's Dutch Flyweight title. In 2010, Betrian defeated Christine Toledo to win WBC Muaythai Women's International Super Flyweight title. During The Battle of Rotterdam Rebels 7, she defeated Linda Ooms to win the WFCA K-1 rules Women's European Bantamweight title. Betrian challenged
Tiffany van Soest for the IKKC Muaythai Women's World Super Bantamweight title. She failed to win the title, as the fight ended in a draw. She defended the WBC Muaythai Women's World Bantamweight title, with a 30 second KO of Marcela Soto. In her next fight, she won the IMTU Women's European Bantamweight title with a TKO win over Katia Semail, as Katia retired after the second round. She defeated Thais Souza by third-round TKO at
WCK Muay Thai: Matter of Pride in Temecula, California on February 15, 2014, to win the WKC Muaythai Women's World Bantamweight title. During Kunlun Fight 3, she won a unanimous decision against
E Meidie to win the WLF 52kg Women's World Championship title. She knocked out Christi Brereton in round two at
WCK Muay Thai: International Showdown in Temecula, California on June 7, 2014, to retain the WBC Muaythai Women's World Bantamweight title. ==Titles==