Sanya Richards-Ross dominated the track and field world, but the busy mom is now using her platform to empower her fellow athletes and celebrate women making a difference in the sports world. “Track and field is mostly an individual sport, but there is nothing like the relay when you get to step on the track and represent your country with other incredible women that you know have worked really hard to be in that moment,” the three-time Olympic medalist exclusively tells OK! while discussing her partnership with SHEIN. “Those were some of my fondest Olympic memories as an athlete, and it bring…