In 1907, Warrick married Dr. Solomon Carter Fuller, a prominent physician and psychiatrist, known for his work with Alzheimer's Disease. Of Liberian birth, Dr. Fuller was one of the first black psychiatrists in the United States. The couple settled on Warren Road in Framingham, Massachusetts where they were one of the first black families to join the community. She continued to create works of art, against the stigma that she should settle down and become a housewife once she and her husband had three children. Prominent African-American people visited their house, as did the Prince of Siam. Within the community, Warrick Fuller helped establish and was involved in the lighting of productions put on by the Framingham Dramatic Society. She was an active member of the St. Andrew's Episcopal Church where she directed and costumed their plays and pageants.