 She sat on the Boards of the American Conservatory Theater, the San Francisco Opera, the San Francisco Ballet, and the San Francisco Symphony.By the mid-90s Frances' health deteriorated, and the couple retired from the day-to-day restaurant business that by then was in the care of their children.Eldest son Michael Sanchez Jr. and wife Debra Sanchez began operating the original Mama's on Washington Square around 1996.