At the 2009 USA Outdoor Track and Field Championships an official left one of the barriers at an incorrect height, leading Bush to fracture the cuboid bone in her right foot. This ended any possibility of making the team for the 2009 World Championships in Athletics. After recovering from her foot injury, she returned to competition as a New Balance professional athlete in mid-2010. She ran personal records for the mile run (4:36.27) and 3000 m (9:15.71). Bush was runner-up at the 2010 USA Outdoor Track and Field Championships in 9:56.08 behind Lisa Aguilera. Her best steeplechase run that season (9:40.49) came in Belgium. Her times were nearer ten minutes in the 2011 season and she placed tenth at the 2011 USA Outdoor Track and Field Championships. Bush placed 21st at the 2012 United States Olympic Trials and having a best of 10:03.92 minutes that year. Bush returned to the form not seen since her college years in 2013. At the Ponce Grand Prix she ran a personal record of 9:39.36 minutes then claimed the national title at the 2013 USA Outdoor Track and Field Championships. This meant she had achieved the "A" standard and would be selected for the 2013 World Championships in Athletics to compete in the steeplechase placing 25th in 9:58.03. Bush ran 9:24.59 in Belgium at Heusden-Zolder in July 2014. Bush placed 8th at 2014 USA Outdoor Track and Field Championships in 9:48.08. Bush ran 9:44.68 in New York at New York Diamond League in June 2015. Bush placed 11th at 2015 USA Outdoor Track and Field Championships in 9:54.51. Bush ran in 2016 Great Edinburgh International Cross Country helping Team USA to finish 5th. Bush ran 9:39.84 in Portland at Lewis & Clark College in June 2016. Bush placed 13th at 2016 United States Olympic Trials (track and field) in 9:58.04.