Lillian Patterson is Jill's mother. As the wife of an army man, she often had to be strong and hard with her daughters, which creates distance between her and Jill, as she feels as though she can't talk to her mother. During her visits, she usually takes a firm handle with Jill whenever she feels as though she's out of line(such as her bossiness and miss treatment of Tim). She appears in several episodes. After her husband passes away, she starts dating again.