Riley's mother is a character in Inside Out. She has the same emotions as her daughter, but they are all female and all wear her glasses and have her hair style. Her main emotion seems to be Sadness, as one of the main functions of Sadness is healing or empathy.
Riley's mother has brown hair, brown eyes, red and black glasses, yellow shirt, and purple pants. She also has a yellow button up shirt with blue jeans and brown loafers on her feet. Later on she has a purple sweater with blue pants and black ballet flats on her feet.
Her full name is given in the Essential Guide. Her Disney.com profile also states her name as Jill Andersen.