Stanley made her professional debut against Leah Barfield at NFC 12 on April 13, 2012. She won the fight by a first-round knockout. Stanley amassed a 3–1 record before signing with
Invicta FC, with all fights ending in a stoppage. Stanley made her Invicta debut against Laura Salazar at
Invicta FC 11: Cyborg vs. Tweet on February 27, 2015. She won the fight by a first-round technical knockout. Stanley faced Shannon Sinn at
Invicta FC 17: Evinger vs. Schneider on May 7, 2016. She won the fight by unanimous decision. Stanley faced
Agnieszka Niedźwiedź at
Invicta FC 18: Grasso vs. Esquibel on July 29, 2016. She lost the fight by unanimous decision. Stanley faced Kelly Kobold-Schmitz at LFA 20 on August 25, 2017. The fight was ruled a split decision draw. ==Mixed martial arts record==