Most of Mrs. Boonchuy's personality is only referred to by her daughter, Anne, throughout the series. What is known about her is that she is very strict and is a very disciplined woman. When Anne was an infant, it was heavily implied that she would get aggravated by her daughter's "high spirited" personality and would look for things for her to do so that she could have some peace and quiet. By the time Anne became a teenager, Mrs. Boonchuy seems to have gotten over her daughter's wild side and was more calm about it. She is very protective of her to the point that she would not let her try genuine Thai food; claiming that her "California stomach" was incapable of handling the rich flavor. It is possible that she is out of touch with modern American culture as Anne had a tendency to mock her strange old fashioned tastes.
Mrs. Boonchuy resembles an older Anne. Much like her, she is a tall slender woman of Thai descent and bronze skin. When Anne was young, her hair was done in a shoulder length messy style, almost like Anne's hair in the series, but flatter. She at some point grew it out and put her hair up in a pony tail with a knot featuring a small butterfly on it. To indicate her age, she has crow's feet around her eyes.
- Mrs. Boonchuy is voiced by On Braly, series creator Matt Braly's mother.
- Based on her telling her daughter that her "California stomach" cannot handle the street food, it is implied that she was born in Thailand.