Great-Grandma Mimi also known simply as "Grandma Mimi" is the title, yet minor, character in To Grandmother's House We Go. She is the great-grandmother of Sarah and Julie Thompson. At one point, Rhonda, their mother, calls her "Grandma", so Mimi may have been Rhonda's grandmother. She lives in a log cabin. It was her sending a Christmas package (which the girls opened way before Christmas, expecting it to be a Princess Penny doll), which turned out to be empty little purses, that got them to want to go to her house when their mother says she wants a vacation. She was portrayed by the late Florence Patterson.