Alston was selected by the New York Liberty with the 24th pick in the 2016 WNBA draft and appeared in one game during the 2016 season before being waived when veteran Swin Cash re-signed with New York. She later signed with Spanish club Al-Qazeres Extremadura where she averaged 16.1 points, 3.1 rebounds and 2.6 assists per game during the 2016–2017 season.