Yi's mom is a warm, nurturing, and caring individual. She genuinely loves her daughter and is very patient with her as she knows that Yi is grieving over her father's death. Even though she felt by her daughter neglecting her, Yi's mom was not upset with her as she understood that Yi was still grieving and tried to help with her daughter's healing process.
Yi's mom lived in Shanghai with her mother, husband, and daughter Yi in an apartment in Shanghai, China. The family seemed to have a happy life until the death of Yi's father. His wife, mother-in-law, and daughter grieved for him, especially for Yi who took his death so hard that she spent her time distracting herself with various jobs and distancing herself from her mother and grandmother.
- She is voiced by Michelle Wong.
- Yi's mom's name is never mentioned once in the film.
- It is unknown what kind of job Yi's mom has.