Gall broke her personal record in the 800m at the 2012 Prefontaine Classic, finishing behind Alysia Montaño with a run of 1:59.28 minutes and then broke it again at the USA Track and Field Olympic Trials, finishing second to Alysia Montaño once again, in a time of 1:59.24 minutes, having made a late charge on the home stretch. She represented Team USA in the 800-meter event alongside Alysia Montano (1:59.08) and Alice Schmidt (1:59.46). At the Olympics she reached the semi-finals, finishing in 3rd place in her semifinal.