After graduation, she became the Operations Director and the first person of color at the Charlotte Lesbian & Gay Community Center.
The committee adopted all of the report's recommendations and called on the United States to “eliminate racial disparities in the field of sexual and reproductive health and standardize the data-collection system on maternal and infant deaths in all states to effectively identify and address the causes of disparities in maternal- and infant-mortality rates.”[5][6][4] After producing the shadow report, SisterSong and CRR co-founded Black Mamas Matter to address black maternal mortality.
In 2016, it became independent as the Black Mamas Matter Alliance, and Simpson continued to serve as a Steering Committee Member and then on the advisory board.
In the same year she was honored by Hands Up United as one of 14 African-American women who advanced the fight for civil rights and gender equality[11] and one of Planned Parenthood Federation of America's 99 Dream Keepers.
[17] She has appeared in theatrical productions such as For the Love of Harlem, Words the Isms, Walk Like a Man, The Vagina Monologues, and For Colored Girls.