Roberta marries Ken Williams, a computer programmer, in 1972. This union would prove to be a pivotal partnership, leading to the creation of Sierra On-Line.

Roberta and Ken have two children, DJ and Chris. Balancing family life with the demands of a burgeoning business presented unique challenges.

Roberta and Ken's family becomes intertwined with Sierra On-Line, contributing to the family-like culture that defined the company for many years. DJ and Chris were sometimes involved in the company's activities.

Ken Williams leaves Sierra On-Line, marking a shift in the dynamics of both their professional and personal relationship. The sale of Sierra to CUC International had changed the company's culture, contributing to his decision.

Roberta and Ken divorced and Roberta subsequently remarried. Details of her current marital status and any children with her new spouse are not publicly available.