Mayumi served in the United States Navy, where she specialized in operations. Upon separation, she completed her Masters in Social Work at University of New Hampshire. She worked in various settings such as home hospice, in-patient psych, crisis team and eventually settled in as a House of Corrections Program Director for a Veteran's unit. She continued her PTSD and trauma work with Veterans that experienced trauma from combat and sexual trauma. Mayumi founded Insight Therapy and Consulting LLC as a way to serve the intersecting and diverse community she experienced along her journey.