How is Mama described in the stage directions?

From the text:

MAMA enters. She is a woman in her early sixties, full-bodied and strong. She is one of those women of a certain grace and beauty who wear it so unobtrusively that it takes a while to notice. Her dark-brown face is surrounded by the total whiteness of her hair, and, being a woman who has adjusted to many things in life and over- come many more, her face is full of strength. She has, we can see, wit and faith of a kind that keep her eyes lit and full of interest and expectancy. She is, in a word, a beautiful woman. Her bearing is perhaps most like the noble bearing of the women of the Hereros of Southwest Africa rather as if she imagines that as she walks she still bears a basket or a vessel upon her head. Her speech, on the other hand, is as careless as her car- riage is precise she is inclined to slur everything but her voice is perhaps not so much quiet as simply soft)