Mimi Yamamoto
Mimi from BSC 26 cover
Full name

Mimi Yamamoto


Yukiko Achieko Vosa - sister
Rioko Kishi - daughter
John Kishi - son-in-law
Claudia Kishi - granddaughter
Janine Kishi - granddaughter


Mimi Yamamoto is the grandmother of Claudia Kishi and Janine Kishi, the mother of Rioko Kishi and the mother-in-law of John Kishi. She died from cancer in book #26, Claudia and the Sad Goodbye. She had a special relationship with Claudia and called her "my Claudia." Claudia often felt that Mimi was the only person in her family who understood her. Claudia physically resembles a young Mimi (Claudia and the Great Search). There is assumption that "Mimi" is not her real name. Her real name is Makiko Yukeie Vosa Yamamoto. She has a sister growing up who stayed in Tamara named Yukiko Achieko Vosa. Yukiko never married though and died when Claudia was 10.


Mimi was born in Tamara, Japan near Mt. Asahi and lived in Sapparo until her 30s. She spoke English fluently with a Japanese accent. Her husband was Hadeo Sato Yamamoto who was born in Tokyo, Japan and died from heart failure when his granddaughter Janine Kishi was one. Except that when she saw him, she knew it would love at first sight (Claudia and the New Girl). During the Baby-sitters Club series, Mimi lived with her daughter and the rest of the Kishi family on Bradford Court in Stoneybrook.

Health ProblemsEdit

Mimi had a stroke in book #7, Claudia and Mean Janine. After the stroke, Mimi sometimes had difficulty finding the right words, became confused easily, and had trouble using her right side. Mimi made an average recovery from her stroke, but in books #24 and #25, she experienced a variety of physical and mental symptoms. In book #26 she re-entered the hospital, where she died from cancer.

Personality and InterestsEdit

Claudia and Mimi birthday party six years old

Mimi at Claudia's sixth birthday party

Mimi enjoyed knitting and crafting and taught Mary Anne Spier how to knit. Mary Anne seems to be the baby sitter that she is next closest to (the first being Claudia). Mimi was apparently the only member of the Kishi family to appreciate Claudia's artistic talent, and once yelled at Claudia's first-grade teacher for failing to appreciate a metaphorical self-portrait Claudia had created (The Baby-sitters Remember). She was known for making a "special tea" which she offered to family members and friends, particularly when they were tense or emotionally distraught. While recovering from her stroke, Mimi became a fan of the show Wheel of Fortune, which she had previously eschewed as trash. She was also very close to Mary Anne and once called her my Mary Anne. Claudia always asked her for advice and she taught Mary Anne how to knit. Mimi used to walk Kristy, Claudia, and Mary Anne home from school. She planned a surprise birthday party when Claudia turned six.

In the graphic novels Edit

Mimi also appears in Raina Telgemeier's graphic novel adaptions of the Baby Sitters Club books. She appears in all of them except The Truth About Stacey. Her biggest appearance was Claudia And Mean Janine, where she was shown to have her stroke as well.