Who is Dolores Engracia Ramirez from Tortilla Flat and what is their importance?

Dolores Engracia Ramirez, who is nicknamed "Sweets," lives in a little house and works as a housekeeper for ladies in Monterey. She also belongs to the Native Daughters of the Golden West. Dolores is described as hatchet-faced and lumpy, with a shrill voice. She and Danny have a physical relationship.