How was Missy's mom a good parent?

Alice Jean Greer is the fiercely independent and assertive mother of Taylor (Missy) Greer, a single mother who raises her daughter to demand only the best treatment and to relish her unique qualities. She is often the source of inspiration and comfort for her daughter, and exists as a vital character herself, finding love in her old age and professing to feeling like a teenager as she prepares to be married. Alice demands that her daughter stay in school. She does not allow Missy time to brood or feel sorry for herself. She encourages Missy to seek out opportunities like the job Missy gets at the hospital.