Hillary attended Christopher Newport University, where she led her soccer team to 4 straight conference championships, including an Elite 8 appearance in 2004. She was named to the All-American squad in 2006 and later had her #13 jersey retired by CNU. In 2007 she started coaching at CNU and was named Assistant Director for CNU's Nike soccer camps. In addition to overseeing daily training regiments, she also oversaw program budgets and staff development. In 2008 she coached CNU to a conference championship.
In 2010 Hillary moved to South Florida, where she coached Varsity soccer and lacrosse at The Pine School. Later she accepted a position at Sacred Heart, where she was the Athletic Director and Physical Education teacher. Here she launched a new girls soccer program and helped promote an increasing participation in all sports.