Shifflett attended Waseca High School where she played softball and volleyball all four years.

[3] Shifflett competed at the World Para Volleyball Championship and won silver medals in 2014 and 2018.

[5][6] She represented the United States at the 2015 Parapan American Games and won a gold medal.

[8] She represented the United States at the 2016 Summer Paralympics in sitting volleyball and won a gold medal.

[9][10] She again represented the United States at the 2020 Summer Paralympics in sitting volleyball and won a gold medal.