She played volleyball (middle hitter) and fast pitch softball (pitcher) throughout high school.

In 2007, she competed in the Sitting Volleyball Invitational in Shanghai, China where Team USA won silver.

Then in July 2010, Team USA won a silver medal at the World Championships which took place in Edmond, Oklahoma.

In 2011 and 2012, respectively, she won three gold medals at the ECVD Continental Cup in Yevpatoria, Ukraine; Parapan American Zonal Championship in São Paulo, Brazil; and Sitting Volleyball Masters Tournament in Leersum, Netherlands.

[1] In 2013, Millage, along with Team USA, won the gold medal at both the Moscow Open Cup[2] in August and the ParaVolley PanAmerican Zone Championships held in Edmond, Oklahoma in October.