世界ボクシング評議会
On May 24, 2013, in the main event at Westchester County Center in White Plains, New York, Jeffrey, a former World Boxing Council Silver titleholder, won the vacant IWBF World Super Featherweight title by ten round unanimous decision over former World Boxing Council Super Featherweight Female World Champion Olivia Gerula of Winnipeg, Canada, fighting in her sixth consecutive world title bout. Scorecards were 99-91, 99-91, and 98-92 for Ronica Jeffrey.