Valentine has been an invited speaker at several physics conferences as well as appearing on podcasts. In February 2017 she was honored by the National Society of Black Physicists for distinguished service to the organization. In 2016, she was honored with the Florida A & M University Distinguished Alumni Award. She was an invited plenary speaker for the 2019 Physics Congress where she was to address more than 1,500 physics and astronomy students. In 2022 she was honored with the Johns Hopkins University Distinguished Alumna Award.