Rousseau began her coaching career at George Washington Preparatory High School. She was the head coach of the girls basketball team for George Washington Prep from 1992 to 1997.[5] Afterwards, she briefly coached in the WNBA starting as an assistant coach for the Los Angeles Sparks in 1997. She later became the Sparks's interim head coach and named head coach at the end of 1997. Rousseau held her position of head coach of the Sparks until the summer of 1998.[6] With the Sparks, Rousseau had 17 wins and 20 losses.[7]
After leaving the WNBA, Rousseau began working in the NCAA. Rousseau was the assistant coach for the Stanford Cardinal women's basketball from 2000 to 2004. Upon leaving the Cardinal, Rousseau was the head coach of the Pepperdine Waves women's basketball team from 2004 to 2013. With the Waves, she had 123 wins and 144 losses.[8]